[SCSI] zfcp: Move CFDC code to new file.
[linux-2.6] / 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 #include <linux/pfn.h>
26
27 #define FSF_QTCB_CURRENT_VERSION                0x00000001
28
29 /* FSF commands */
30 #define FSF_QTCB_FCP_CMND                       0x00000001
31 #define FSF_QTCB_ABORT_FCP_CMND                 0x00000002
32 #define FSF_QTCB_OPEN_PORT_WITH_DID             0x00000005
33 #define FSF_QTCB_OPEN_LUN                       0x00000006
34 #define FSF_QTCB_CLOSE_LUN                      0x00000007
35 #define FSF_QTCB_CLOSE_PORT                     0x00000008
36 #define FSF_QTCB_CLOSE_PHYSICAL_PORT            0x00000009
37 #define FSF_QTCB_SEND_ELS                       0x0000000B
38 #define FSF_QTCB_SEND_GENERIC                   0x0000000C
39 #define FSF_QTCB_EXCHANGE_CONFIG_DATA           0x0000000D
40 #define FSF_QTCB_EXCHANGE_PORT_DATA             0x0000000E
41 #define FSF_QTCB_DOWNLOAD_CONTROL_FILE          0x00000012
42 #define FSF_QTCB_UPLOAD_CONTROL_FILE            0x00000013
43
44 /* FSF QTCB types */
45 #define FSF_IO_COMMAND                          0x00000001
46 #define FSF_SUPPORT_COMMAND                     0x00000002
47 #define FSF_CONFIG_COMMAND                      0x00000003
48 #define FSF_PORT_COMMAND                        0x00000004
49
50 /* FSF control file upload/download operations' subtype and options */
51 #define FSF_CFDC_OPERATION_SUBTYPE              0x00020001
52 #define FSF_CFDC_OPTION_NORMAL_MODE             0x00000000
53 #define FSF_CFDC_OPTION_FORCE                   0x00000001
54 #define FSF_CFDC_OPTION_FULL_ACCESS             0x00000002
55 #define FSF_CFDC_OPTION_RESTRICTED_ACCESS       0x00000004
56
57 /* FSF protocol states */
58 #define FSF_PROT_GOOD                           0x00000001
59 #define FSF_PROT_QTCB_VERSION_ERROR             0x00000010
60 #define FSF_PROT_SEQ_NUMB_ERROR                 0x00000020
61 #define FSF_PROT_UNSUPP_QTCB_TYPE               0x00000040
62 #define FSF_PROT_HOST_CONNECTION_INITIALIZING   0x00000080
63 #define FSF_PROT_FSF_STATUS_PRESENTED           0x00000100
64 #define FSF_PROT_DUPLICATE_REQUEST_ID           0x00000200
65 #define FSF_PROT_LINK_DOWN                      0x00000400
66 #define FSF_PROT_REEST_QUEUE                    0x00000800
67 #define FSF_PROT_ERROR_STATE                    0x01000000
68
69 /* FSF states */
70 #define FSF_GOOD                                0x00000000
71 #define FSF_PORT_ALREADY_OPEN                   0x00000001
72 #define FSF_LUN_ALREADY_OPEN                    0x00000002
73 #define FSF_PORT_HANDLE_NOT_VALID               0x00000003
74 #define FSF_LUN_HANDLE_NOT_VALID                0x00000004
75 #define FSF_HANDLE_MISMATCH                     0x00000005
76 #define FSF_SERVICE_CLASS_NOT_SUPPORTED         0x00000006
77 #define FSF_FCPLUN_NOT_VALID                    0x00000009
78 #define FSF_ACCESS_DENIED                       0x00000010
79 #define FSF_LUN_SHARING_VIOLATION               0x00000012
80 #define FSF_FCP_COMMAND_DOES_NOT_EXIST          0x00000022
81 #define FSF_DIRECTION_INDICATOR_NOT_VALID       0x00000030
82 #define FSF_CMND_LENGTH_NOT_VALID               0x00000033
83 #define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED    0x00000040
84 #define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED     0x00000041
85 #define FSF_ELS_COMMAND_REJECTED                0x00000050
86 #define FSF_GENERIC_COMMAND_REJECTED            0x00000051
87 #define FSF_OPERATION_PARTIALLY_SUCCESSFUL      0x00000052
88 #define FSF_AUTHORIZATION_FAILURE               0x00000053
89 #define FSF_CFDC_ERROR_DETECTED                 0x00000054
90 #define FSF_CONTROL_FILE_UPDATE_ERROR           0x00000055
91 #define FSF_CONTROL_FILE_TOO_LARGE              0x00000056
92 #define FSF_ACCESS_CONFLICT_DETECTED            0x00000057
93 #define FSF_CONFLICTS_OVERRULED                 0x00000058
94 #define FSF_PORT_BOXED                          0x00000059
95 #define FSF_LUN_BOXED                           0x0000005A
96 #define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE     0x0000005B
97 #define FSF_PAYLOAD_SIZE_MISMATCH               0x00000060
98 #define FSF_REQUEST_SIZE_TOO_LARGE              0x00000061
99 #define FSF_RESPONSE_SIZE_TOO_LARGE             0x00000062
100 #define FSF_SBAL_MISMATCH                       0x00000063
101 #define FSF_OPEN_PORT_WITHOUT_PRLI              0x00000064
102 #define FSF_ADAPTER_STATUS_AVAILABLE            0x000000AD
103 #define FSF_FCP_RSP_AVAILABLE                   0x000000AF
104 #define FSF_UNKNOWN_COMMAND                     0x000000E2
105 #define FSF_UNKNOWN_OP_SUBTYPE                  0x000000E3
106 #define FSF_INVALID_COMMAND_OPTION              0x000000E5
107 /* #define FSF_ERROR                             0x000000FF  */
108
109 #define FSF_PROT_STATUS_QUAL_SIZE               16
110 #define FSF_STATUS_QUALIFIER_SIZE               16
111
112 /* FSF status qualifier, recommendations */
113 #define FSF_SQ_NO_RECOM                         0x00
114 #define FSF_SQ_FCP_RSP_AVAILABLE                0x01
115 #define FSF_SQ_RETRY_IF_POSSIBLE                0x02
116 #define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED       0x03
117 #define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE       0x04
118 #define FSF_SQ_ULP_PROGRAMMING_ERROR            0x05
119 #define FSF_SQ_COMMAND_ABORTED                  0x06
120 #define FSF_SQ_NO_RETRY_POSSIBLE                0x07
121
122 /* FSF status qualifier for CFDC commands */
123 #define FSF_SQ_CFDC_HARDENED_ON_SE              0x00000000
124 #define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE      0x00000001
125 #define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2     0x00000002
126 /* CFDC subtable codes */
127 #define FSF_SQ_CFDC_SUBTABLE_OS                 0x0001
128 #define FSF_SQ_CFDC_SUBTABLE_PORT_WWPN          0x0002
129 #define FSF_SQ_CFDC_SUBTABLE_PORT_DID           0x0003
130 #define FSF_SQ_CFDC_SUBTABLE_LUN                0x0004
131
132 /* FSF status qualifier (most significant 4 bytes), local link down */
133 #define FSF_PSQ_LINK_NO_LIGHT                   0x00000004
134 #define FSF_PSQ_LINK_WRAP_PLUG                  0x00000008
135 #define FSF_PSQ_LINK_NO_FCP                     0x00000010
136 #define FSF_PSQ_LINK_FIRMWARE_UPDATE            0x00000020
137 #define FSF_PSQ_LINK_INVALID_WWPN               0x00000100
138 #define FSF_PSQ_LINK_NO_NPIV_SUPPORT            0x00000200
139 #define FSF_PSQ_LINK_NO_FCP_RESOURCES           0x00000400
140 #define FSF_PSQ_LINK_NO_FABRIC_RESOURCES        0x00000800
141 #define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE        0x00001000
142 #define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED  0x00002000
143 #define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED       0x00004000
144 #define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT         0x00008000
145
146 /* payload size in status read buffer */
147 #define FSF_STATUS_READ_PAYLOAD_SIZE            4032
148
149 /* number of status read buffers that should be sent by ULP */
150 #define FSF_STATUS_READS_RECOM                  16
151
152 /* status types in status read buffer */
153 #define FSF_STATUS_READ_PORT_CLOSED             0x00000001
154 #define FSF_STATUS_READ_INCOMING_ELS            0x00000002
155 #define FSF_STATUS_READ_SENSE_DATA_AVAIL        0x00000003
156 #define FSF_STATUS_READ_BIT_ERROR_THRESHOLD     0x00000004
157 #define FSF_STATUS_READ_LINK_DOWN               0x00000005
158 #define FSF_STATUS_READ_LINK_UP                 0x00000006
159 #define FSF_STATUS_READ_NOTIFICATION_LOST       0x00000009
160 #define FSF_STATUS_READ_CFDC_UPDATED            0x0000000A
161 #define FSF_STATUS_READ_CFDC_HARDENED           0x0000000B
162 #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT    0x0000000C
163
164 /* status subtypes in status read buffer */
165 #define FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT     0x00000001
166 #define FSF_STATUS_READ_SUB_ERROR_PORT          0x00000002
167
168 /* status subtypes for link down */
169 #define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK    0x00000000
170 #define FSF_STATUS_READ_SUB_FDISC_FAILED        0x00000001
171 #define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE     0x00000002
172
173 /* status subtypes for unsolicited status notification lost */
174 #define FSF_STATUS_READ_SUB_INCOMING_ELS        0x00000001
175 #define FSF_STATUS_READ_SUB_SENSE_DATA          0x00000002
176 #define FSF_STATUS_READ_SUB_LINK_STATUS         0x00000004
177 #define FSF_STATUS_READ_SUB_PORT_CLOSED         0x00000008
178 #define FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD 0x00000010
179 #define FSF_STATUS_READ_SUB_ACT_UPDATED         0x00000020
180 #define FSF_STATUS_READ_SUB_ACT_HARDENED        0x00000040
181 #define FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT 0x00000080
182
183 /* status subtypes for CFDC */
184 #define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE 0x00000002
185 #define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2 0x0000000F
186
187 /* topologie that is detected by the adapter */
188 #define FSF_TOPO_ERROR                          0x00000000
189 #define FSF_TOPO_P2P                            0x00000001
190 #define FSF_TOPO_FABRIC                         0x00000002
191 #define FSF_TOPO_AL                             0x00000003
192
193 /* data direction for FCP commands */
194 #define FSF_DATADIR_WRITE                       0x00000001
195 #define FSF_DATADIR_READ                        0x00000002
196 #define FSF_DATADIR_READ_WRITE                  0x00000003
197 #define FSF_DATADIR_CMND                        0x00000004
198
199 /* fc service class */
200 #define FSF_CLASS_1                             0x00000001
201 #define FSF_CLASS_2                             0x00000002
202 #define FSF_CLASS_3                             0x00000003
203
204 /* SBAL chaining */
205 #define FSF_MAX_SBALS_PER_REQ                   36
206 #define FSF_MAX_SBALS_PER_ELS_REQ               2
207
208 /* logging space behind QTCB */
209 #define FSF_QTCB_LOG_SIZE                       1024
210
211 /* channel features */
212 #define FSF_FEATURE_CFDC                        0x00000002
213 #define FSF_FEATURE_LUN_SHARING                 0x00000004
214 #define FSF_FEATURE_NOTIFICATION_LOST           0x00000008
215 #define FSF_FEATURE_HBAAPI_MANAGEMENT           0x00000010
216 #define FSF_FEATURE_ELS_CT_CHAINED_SBALS        0x00000020
217 #define FSF_FEATURE_UPDATE_ALERT                0x00000100
218 #define FSF_FEATURE_MEASUREMENT_DATA            0x00000200
219
220 /* host connection features */
221 #define FSF_FEATURE_NPIV_MODE                   0x00000001
222 #define FSF_FEATURE_VM_ASSIGNED_WWPN            0x00000002
223
224 /* option */
225 #define FSF_OPEN_LUN_SUPPRESS_BOXING            0x00000001
226 #define FSF_OPEN_LUN_REPLICATE_SENSE            0x00000002
227
228 /* adapter types */
229 #define FSF_ADAPTER_TYPE_FICON                  0x00000001
230 #define FSF_ADAPTER_TYPE_FICON_EXPRESS          0x00000002
231
232 /* port types */
233 #define FSF_HBA_PORTTYPE_UNKNOWN                0x00000001
234 #define FSF_HBA_PORTTYPE_NOTPRESENT             0x00000003
235 #define FSF_HBA_PORTTYPE_NPORT                  0x00000005
236 #define FSF_HBA_PORTTYPE_PTP                    0x00000021
237 /* following are not defined and used by FSF Spec
238    but are additionally defined by FC-HBA */
239 #define FSF_HBA_PORTTYPE_OTHER                  0x00000002
240 #define FSF_HBA_PORTTYPE_NOTPRESENT             0x00000003
241 #define FSF_HBA_PORTTYPE_NLPORT                 0x00000006
242 #define FSF_HBA_PORTTYPE_FLPORT                 0x00000007
243 #define FSF_HBA_PORTTYPE_FPORT                  0x00000008
244 #define FSF_HBA_PORTTYPE_LPORT                  0x00000020
245
246 /* port states */
247 #define FSF_HBA_PORTSTATE_UNKNOWN               0x00000001
248 #define FSF_HBA_PORTSTATE_ONLINE                0x00000002
249 #define FSF_HBA_PORTSTATE_OFFLINE               0x00000003
250 #define FSF_HBA_PORTSTATE_LINKDOWN              0x00000006
251 #define FSF_HBA_PORTSTATE_ERROR                 0x00000007
252
253 /* IO states of adapter */
254 #define FSF_IOSTAT_NPORT_RJT                    0x00000004
255 #define FSF_IOSTAT_FABRIC_RJT                   0x00000005
256 #define FSF_IOSTAT_LS_RJT                       0x00000009
257
258 /* open LUN access flags*/
259 #define FSF_UNIT_ACCESS_OPEN_LUN_ALLOWED        0x01000000
260 #define FSF_UNIT_ACCESS_EXCLUSIVE               0x02000000
261 #define FSF_UNIT_ACCESS_OUTBOUND_TRANSFER       0x10000000
262
263 /* FSF interface for CFDC */
264 #define ZFCP_CFDC_MAX_SIZE              127 * 1024
265 #define ZFCP_CFDC_PAGES                 PFN_UP(ZFCP_CFDC_MAX_SIZE)
266
267 struct zfcp_fsf_cfdc {
268         struct scatterlist sg[ZFCP_CFDC_PAGES];
269         u32 command;
270         u32 option;
271 };
272
273 struct fsf_queue_designator {
274         u8  cssid;
275         u8  chpid;
276         u8  hla;
277         u8  ua;
278         u32 res1;
279 } __attribute__ ((packed));
280
281 struct fsf_port_closed_payload {
282         struct fsf_queue_designator queue_designator;
283         u32                         port_handle;
284 } __attribute__ ((packed));
285
286 struct fsf_bit_error_payload {
287         u32 res1;
288         u32 link_failure_error_count;
289         u32 loss_of_sync_error_count;
290         u32 loss_of_signal_error_count;
291         u32 primitive_sequence_error_count;
292         u32 invalid_transmission_word_error_count;
293         u32 crc_error_count;
294         u32 primitive_sequence_event_timeout_count;
295         u32 elastic_buffer_overrun_error_count;
296         u32 fcal_arbitration_timeout_count;
297         u32 advertised_receive_b2b_credit;
298         u32 current_receive_b2b_credit;
299         u32 advertised_transmit_b2b_credit;
300         u32 current_transmit_b2b_credit;
301 } __attribute__ ((packed));
302
303 struct fsf_status_read_buffer {
304         u32 status_type;
305         u32 status_subtype;
306         u32 length;
307         u32 res1;
308         struct fsf_queue_designator queue_designator;
309         u32 d_id;
310         u32 class;
311         u64 fcp_lun;
312         u8  res3[24];
313         u8  payload[FSF_STATUS_READ_PAYLOAD_SIZE];
314 } __attribute__ ((packed));
315
316 struct fsf_qual_version_error {
317         u32 fsf_version;
318         u32 res1[3];
319 } __attribute__ ((packed));
320
321 struct fsf_qual_sequence_error {
322         u32 exp_req_seq_no;
323         u32 res1[3];
324 } __attribute__ ((packed));
325
326 struct fsf_link_down_info {
327         u32 error_code;
328         u32 res1;
329         u8 res2[2];
330         u8 primary_status;
331         u8 ioerr_code;
332         u8 action_code;
333         u8 reason_code;
334         u8 explanation_code;
335         u8 vendor_specific_code;
336 } __attribute__ ((packed));
337
338 struct fsf_qual_latency_info {
339         u32 channel_lat;
340         u32 fabric_lat;
341         u8 res1[8];
342 } __attribute__ ((packed));
343
344 union fsf_prot_status_qual {
345         u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)];
346         struct fsf_qual_version_error   version_error;
347         struct fsf_qual_sequence_error  sequence_error;
348         struct fsf_link_down_info link_down_info;
349         struct fsf_qual_latency_info latency_info;
350 } __attribute__ ((packed));
351
352 struct fsf_qtcb_prefix {
353         u64 req_id;
354         u32 qtcb_version;
355         u32 ulp_info;
356         u32 qtcb_type;
357         u32 req_seq_no;
358         u32 prot_status;
359         union fsf_prot_status_qual prot_status_qual;
360         u8  res1[20];
361 } __attribute__ ((packed));
362
363 struct fsf_statistics_info {
364         u64 input_req;
365         u64 output_req;
366         u64 control_req;
367         u64 input_mb;
368         u64 output_mb;
369         u64 seconds_act;
370 } __attribute__ ((packed));
371
372 union fsf_status_qual {
373         u8  byte[FSF_STATUS_QUALIFIER_SIZE];
374         u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)];
375         u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)];
376         u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)];
377         struct fsf_queue_designator fsf_queue_designator;
378         struct fsf_link_down_info link_down_info;
379 } __attribute__ ((packed));
380
381 struct fsf_qtcb_header {
382         u64 req_handle;
383         u32 fsf_command;
384         u32 res1;
385         u32 port_handle;
386         u32 lun_handle;
387         u32 res2;
388         u32 fsf_status;
389         union fsf_status_qual fsf_status_qual;
390         u8  res3[28];
391         u16 log_start;
392         u16 log_length;
393         u8  res4[16];
394 } __attribute__ ((packed));
395
396 struct fsf_nport_serv_param {
397         u8  common_serv_param[16];
398         u64 wwpn;
399         u64 wwnn;
400         u8  class1_serv_param[16];
401         u8  class2_serv_param[16];
402         u8  class3_serv_param[16];
403         u8  class4_serv_param[16];
404         u8  vendor_version_level[16];
405 } __attribute__ ((packed));
406
407 struct fsf_plogi {
408         u32    code;
409         struct fsf_nport_serv_param serv_param;
410 } __attribute__ ((packed));
411
412 #define FSF_FCP_CMND_SIZE       288
413 #define FSF_FCP_RSP_SIZE        128
414
415 struct fsf_qtcb_bottom_io {
416         u32 data_direction;
417         u32 service_class;
418         u8  res1[8];
419         u32 fcp_cmnd_length;
420         u8  res2[12];
421         u8  fcp_cmnd[FSF_FCP_CMND_SIZE];
422         u8  fcp_rsp[FSF_FCP_RSP_SIZE];
423         u8  res3[64];
424 } __attribute__ ((packed));
425
426 struct fsf_qtcb_bottom_support {
427         u32 operation_subtype;
428         u8  res1[12];
429         u32 d_id;
430         u32 option;
431         u64 fcp_lun;
432         u64 res2;
433         u64 req_handle;
434         u32 service_class;
435         u8  res3[3];
436         u8  timeout;
437         u32 lun_access_info;
438         u8  res4[180];
439         u32 els1_length;
440         u32 els2_length;
441         u32 req_buf_length;
442         u32 resp_buf_length;
443         u8  els[256];
444 } __attribute__ ((packed));
445
446 struct fsf_qtcb_bottom_config {
447         u32 lic_version;
448         u32 feature_selection;
449         u32 high_qtcb_version;
450         u32 low_qtcb_version;
451         u32 max_qtcb_size;
452         u32 max_data_transfer_size;
453         u32 adapter_features;
454         u32 connection_features;
455         u32 fc_topology;
456         u32 fc_link_speed;
457         u32 adapter_type;
458         u32 peer_d_id;
459         u8 res1[2];
460         u16 timer_interval;
461         u8 res2[8];
462         u32 s_id;
463         struct fsf_nport_serv_param nport_serv_param;
464         u8 reserved_nport_serv_param[16];
465         u8 res3[8];
466         u32 adapter_ports;
467         u32 hardware_version;
468         u8 serial_number[32];
469         struct fsf_nport_serv_param plogi_payload;
470         struct fsf_statistics_info stat_info;
471         u8 res4[112];
472 } __attribute__ ((packed));
473
474 struct fsf_qtcb_bottom_port {
475         u64 wwpn;
476         u32 fc_port_id;
477         u32 port_type;
478         u32 port_state;
479         u32 class_of_service;   /* should be 0x00000006 for class 2 and 3 */
480         u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */
481         u8 active_fc4_types[32];
482         u32 supported_speed;    /* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */
483         u32 maximum_frame_size; /* fixed value of 2112 */
484         u64 seconds_since_last_reset;
485         u64 tx_frames;
486         u64 tx_words;
487         u64 rx_frames;
488         u64 rx_words;
489         u64 lip;                /* 0 */
490         u64 nos;                /* currently 0 */
491         u64 error_frames;       /* currently 0 */
492         u64 dumped_frames;      /* currently 0 */
493         u64 link_failure;
494         u64 loss_of_sync;
495         u64 loss_of_signal;
496         u64 psp_error_counts;
497         u64 invalid_tx_words;
498         u64 invalid_crcs;
499         u64 input_requests;
500         u64 output_requests;
501         u64 control_requests;
502         u64 input_mb;           /* where 1 MByte == 1.000.000 Bytes */
503         u64 output_mb;          /* where 1 MByte == 1.000.000 Bytes */
504         u8 cp_util;
505         u8 cb_util;
506         u8 a_util;
507         u8 res2[253];
508 } __attribute__ ((packed));
509
510 union fsf_qtcb_bottom {
511         struct fsf_qtcb_bottom_io      io;
512         struct fsf_qtcb_bottom_support support;
513         struct fsf_qtcb_bottom_config  config;
514         struct fsf_qtcb_bottom_port port;
515 };
516
517 struct fsf_qtcb {
518         struct fsf_qtcb_prefix prefix;
519         struct fsf_qtcb_header header;
520         union  fsf_qtcb_bottom bottom;
521         u8 log[FSF_QTCB_LOG_SIZE];
522 } __attribute__ ((packed));
523
524 #endif                          /* FSF_H */