Root/
1 | /* |
2 | * $Header: /cvsroot/osst/Driver/osst.h,v 1.16 2005/01/01 21:13:35 wriede Exp $ |
3 | */ |
4 | |
5 | #include <asm/byteorder.h> |
6 | #include <linux/completion.h> |
7 | #include <linux/mutex.h> |
8 | |
9 | /* FIXME - rename and use the following two types or delete them! |
10 | * and the types really should go to st.h anyway... |
11 | * INQUIRY packet command - Data Format (From Table 6-8 of QIC-157C) |
12 | */ |
13 | typedef struct { |
14 | unsigned device_type :5; /* Peripheral Device Type */ |
15 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ |
16 | unsigned reserved1_6t0 :7; /* Reserved */ |
17 | unsigned rmb :1; /* Removable Medium Bit */ |
18 | unsigned ansi_version :3; /* ANSI Version */ |
19 | unsigned ecma_version :3; /* ECMA Version */ |
20 | unsigned iso_version :2; /* ISO Version */ |
21 | unsigned response_format :4; /* Response Data Format */ |
22 | unsigned reserved3_45 :2; /* Reserved */ |
23 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ |
24 | unsigned reserved3_7 :1; /* AENC - Reserved */ |
25 | u8 additional_length; /* Additional Length (total_length-4) */ |
26 | u8 rsv5, rsv6, rsv7; /* Reserved */ |
27 | u8 vendor_id[8]; /* Vendor Identification */ |
28 | u8 product_id[16]; /* Product Identification */ |
29 | u8 revision_level[4]; /* Revision Level */ |
30 | u8 vendor_specific[20]; /* Vendor Specific - Optional */ |
31 | u8 reserved56t95[40]; /* Reserved - Optional */ |
32 | /* Additional information may be returned */ |
33 | } idetape_inquiry_result_t; |
34 | |
35 | /* |
36 | * READ POSITION packet command - Data Format (From Table 6-57) |
37 | */ |
38 | typedef struct { |
39 | unsigned reserved0_10 :2; /* Reserved */ |
40 | unsigned bpu :1; /* Block Position Unknown */ |
41 | unsigned reserved0_543 :3; /* Reserved */ |
42 | unsigned eop :1; /* End Of Partition */ |
43 | unsigned bop :1; /* Beginning Of Partition */ |
44 | u8 partition; /* Partition Number */ |
45 | u8 reserved2, reserved3; /* Reserved */ |
46 | u32 first_block; /* First Block Location */ |
47 | u32 last_block; /* Last Block Location (Optional) */ |
48 | u8 reserved12; /* Reserved */ |
49 | u8 blocks_in_buffer[3]; /* Blocks In Buffer - (Optional) */ |
50 | u32 bytes_in_buffer; /* Bytes In Buffer (Optional) */ |
51 | } idetape_read_position_result_t; |
52 | |
53 | /* |
54 | * Follows structures which are related to the SELECT SENSE / MODE SENSE |
55 | * packet commands. |
56 | */ |
57 | #define COMPRESSION_PAGE 0x0f |
58 | #define COMPRESSION_PAGE_LENGTH 16 |
59 | |
60 | #define CAPABILITIES_PAGE 0x2a |
61 | #define CAPABILITIES_PAGE_LENGTH 20 |
62 | |
63 | #define TAPE_PARAMTR_PAGE 0x2b |
64 | #define TAPE_PARAMTR_PAGE_LENGTH 16 |
65 | |
66 | #define NUMBER_RETRIES_PAGE 0x2f |
67 | #define NUMBER_RETRIES_PAGE_LENGTH 4 |
68 | |
69 | #define BLOCK_SIZE_PAGE 0x30 |
70 | #define BLOCK_SIZE_PAGE_LENGTH 4 |
71 | |
72 | #define BUFFER_FILLING_PAGE 0x33 |
73 | #define BUFFER_FILLING_PAGE_LENGTH 4 |
74 | |
75 | #define VENDOR_IDENT_PAGE 0x36 |
76 | #define VENDOR_IDENT_PAGE_LENGTH 8 |
77 | |
78 | #define LOCATE_STATUS_PAGE 0x37 |
79 | #define LOCATE_STATUS_PAGE_LENGTH 0 |
80 | |
81 | #define MODE_HEADER_LENGTH 4 |
82 | |
83 | |
84 | /* |
85 | * REQUEST SENSE packet command result - Data Format. |
86 | */ |
87 | typedef struct { |
88 | unsigned error_code :7; /* Current of deferred errors */ |
89 | unsigned valid :1; /* The information field conforms to QIC-157C */ |
90 | u8 reserved1 :8; /* Segment Number - Reserved */ |
91 | unsigned sense_key :4; /* Sense Key */ |
92 | unsigned reserved2_4 :1; /* Reserved */ |
93 | unsigned ili :1; /* Incorrect Length Indicator */ |
94 | unsigned eom :1; /* End Of Medium */ |
95 | unsigned filemark :1; /* Filemark */ |
96 | u32 information __attribute__ ((packed)); |
97 | u8 asl; /* Additional sense length (n-7) */ |
98 | u32 command_specific; /* Additional command specific information */ |
99 | u8 asc; /* Additional Sense Code */ |
100 | u8 ascq; /* Additional Sense Code Qualifier */ |
101 | u8 replaceable_unit_code; /* Field Replaceable Unit Code */ |
102 | unsigned sk_specific1 :7; /* Sense Key Specific */ |
103 | unsigned sksv :1; /* Sense Key Specific information is valid */ |
104 | u8 sk_specific2; /* Sense Key Specific */ |
105 | u8 sk_specific3; /* Sense Key Specific */ |
106 | u8 pad[2]; /* Padding to 20 bytes */ |
107 | } idetape_request_sense_result_t; |
108 | |
109 | /* |
110 | * Mode Parameter Header for the MODE SENSE packet command |
111 | */ |
112 | typedef struct { |
113 | u8 mode_data_length; /* Length of the following data transfer */ |
114 | u8 medium_type; /* Medium Type */ |
115 | u8 dsp; /* Device Specific Parameter */ |
116 | u8 bdl; /* Block Descriptor Length */ |
117 | } osst_mode_parameter_header_t; |
118 | |
119 | /* |
120 | * Mode Parameter Block Descriptor the MODE SENSE packet command |
121 | * |
122 | * Support for block descriptors is optional. |
123 | */ |
124 | typedef struct { |
125 | u8 density_code; /* Medium density code */ |
126 | u8 blocks[3]; /* Number of blocks */ |
127 | u8 reserved4; /* Reserved */ |
128 | u8 length[3]; /* Block Length */ |
129 | } osst_parameter_block_descriptor_t; |
130 | |
131 | /* |
132 | * The Data Compression Page, as returned by the MODE SENSE packet command. |
133 | */ |
134 | typedef struct { |
135 | #if defined(__BIG_ENDIAN_BITFIELD) |
136 | unsigned ps :1; |
137 | unsigned reserved0 :1; /* Reserved */ |
138 | unsigned page_code :6; /* Page Code - Should be 0xf */ |
139 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
140 | unsigned page_code :6; /* Page Code - Should be 0xf */ |
141 | unsigned reserved0 :1; /* Reserved */ |
142 | unsigned ps :1; |
143 | #else |
144 | #error "Please fix <asm/byteorder.h>" |
145 | #endif |
146 | u8 page_length; /* Page Length - Should be 14 */ |
147 | #if defined(__BIG_ENDIAN_BITFIELD) |
148 | unsigned dce :1; /* Data Compression Enable */ |
149 | unsigned dcc :1; /* Data Compression Capable */ |
150 | unsigned reserved2 :6; /* Reserved */ |
151 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
152 | unsigned reserved2 :6; /* Reserved */ |
153 | unsigned dcc :1; /* Data Compression Capable */ |
154 | unsigned dce :1; /* Data Compression Enable */ |
155 | #else |
156 | #error "Please fix <asm/byteorder.h>" |
157 | #endif |
158 | #if defined(__BIG_ENDIAN_BITFIELD) |
159 | unsigned dde :1; /* Data Decompression Enable */ |
160 | unsigned red :2; /* Report Exception on Decompression */ |
161 | unsigned reserved3 :5; /* Reserved */ |
162 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
163 | unsigned reserved3 :5; /* Reserved */ |
164 | unsigned red :2; /* Report Exception on Decompression */ |
165 | unsigned dde :1; /* Data Decompression Enable */ |
166 | #else |
167 | #error "Please fix <asm/byteorder.h>" |
168 | #endif |
169 | u32 ca; /* Compression Algorithm */ |
170 | u32 da; /* Decompression Algorithm */ |
171 | u8 reserved[4]; /* Reserved */ |
172 | } osst_data_compression_page_t; |
173 | |
174 | /* |
175 | * The Medium Partition Page, as returned by the MODE SENSE packet command. |
176 | */ |
177 | typedef struct { |
178 | #if defined(__BIG_ENDIAN_BITFIELD) |
179 | unsigned ps :1; |
180 | unsigned reserved1_6 :1; /* Reserved */ |
181 | unsigned page_code :6; /* Page Code - Should be 0x11 */ |
182 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
183 | unsigned page_code :6; /* Page Code - Should be 0x11 */ |
184 | unsigned reserved1_6 :1; /* Reserved */ |
185 | unsigned ps :1; |
186 | #else |
187 | #error "Please fix <asm/byteorder.h>" |
188 | #endif |
189 | u8 page_length; /* Page Length - Should be 6 */ |
190 | u8 map; /* Maximum Additional Partitions - Should be 0 */ |
191 | u8 apd; /* Additional Partitions Defined - Should be 0 */ |
192 | #if defined(__BIG_ENDIAN_BITFIELD) |
193 | unsigned fdp :1; /* Fixed Data Partitions */ |
194 | unsigned sdp :1; /* Should be 0 */ |
195 | unsigned idp :1; /* Should be 0 */ |
196 | unsigned psum :2; /* Should be 0 */ |
197 | unsigned reserved4_012 :3; /* Reserved */ |
198 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
199 | unsigned reserved4_012 :3; /* Reserved */ |
200 | unsigned psum :2; /* Should be 0 */ |
201 | unsigned idp :1; /* Should be 0 */ |
202 | unsigned sdp :1; /* Should be 0 */ |
203 | unsigned fdp :1; /* Fixed Data Partitions */ |
204 | #else |
205 | #error "Please fix <asm/byteorder.h>" |
206 | #endif |
207 | u8 mfr; /* Medium Format Recognition */ |
208 | u8 reserved[2]; /* Reserved */ |
209 | } osst_medium_partition_page_t; |
210 | |
211 | /* |
212 | * Capabilities and Mechanical Status Page |
213 | */ |
214 | typedef struct { |
215 | #if defined(__BIG_ENDIAN_BITFIELD) |
216 | unsigned reserved1_67 :2; |
217 | unsigned page_code :6; /* Page code - Should be 0x2a */ |
218 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
219 | unsigned page_code :6; /* Page code - Should be 0x2a */ |
220 | unsigned reserved1_67 :2; |
221 | #else |
222 | #error "Please fix <asm/byteorder.h>" |
223 | #endif |
224 | u8 page_length; /* Page Length - Should be 0x12 */ |
225 | u8 reserved2, reserved3; |
226 | #if defined(__BIG_ENDIAN_BITFIELD) |
227 | unsigned reserved4_67 :2; |
228 | unsigned sprev :1; /* Supports SPACE in the reverse direction */ |
229 | unsigned reserved4_1234 :4; |
230 | unsigned ro :1; /* Read Only Mode */ |
231 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
232 | unsigned ro :1; /* Read Only Mode */ |
233 | unsigned reserved4_1234 :4; |
234 | unsigned sprev :1; /* Supports SPACE in the reverse direction */ |
235 | unsigned reserved4_67 :2; |
236 | #else |
237 | #error "Please fix <asm/byteorder.h>" |
238 | #endif |
239 | #if defined(__BIG_ENDIAN_BITFIELD) |
240 | unsigned reserved5_67 :2; |
241 | unsigned qfa :1; /* Supports the QFA two partition formats */ |
242 | unsigned reserved5_4 :1; |
243 | unsigned efmt :1; /* Supports ERASE command initiated formatting */ |
244 | unsigned reserved5_012 :3; |
245 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
246 | unsigned reserved5_012 :3; |
247 | unsigned efmt :1; /* Supports ERASE command initiated formatting */ |
248 | unsigned reserved5_4 :1; |
249 | unsigned qfa :1; /* Supports the QFA two partition formats */ |
250 | unsigned reserved5_67 :2; |
251 | #else |
252 | #error "Please fix <asm/byteorder.h>" |
253 | #endif |
254 | #if defined(__BIG_ENDIAN_BITFIELD) |
255 | unsigned cmprs :1; /* Supports data compression */ |
256 | unsigned ecc :1; /* Supports error correction */ |
257 | unsigned reserved6_45 :2; /* Reserved */ |
258 | unsigned eject :1; /* The device can eject the volume */ |
259 | unsigned prevent :1; /* The device defaults in the prevent state after power up */ |
260 | unsigned locked :1; /* The volume is locked */ |
261 | unsigned lock :1; /* Supports locking the volume */ |
262 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
263 | unsigned lock :1; /* Supports locking the volume */ |
264 | unsigned locked :1; /* The volume is locked */ |
265 | unsigned prevent :1; /* The device defaults in the prevent state after power up */ |
266 | unsigned eject :1; /* The device can eject the volume */ |
267 | unsigned reserved6_45 :2; /* Reserved */ |
268 | unsigned ecc :1; /* Supports error correction */ |
269 | unsigned cmprs :1; /* Supports data compression */ |
270 | #else |
271 | #error "Please fix <asm/byteorder.h>" |
272 | #endif |
273 | #if defined(__BIG_ENDIAN_BITFIELD) |
274 | unsigned blk32768 :1; /* slowb - the device restricts the byte count for PIO */ |
275 | /* transfers for slow buffer memory ??? */ |
276 | /* Also 32768 block size in some cases */ |
277 | unsigned reserved7_3_6 :4; |
278 | unsigned blk1024 :1; /* Supports 1024 bytes block size */ |
279 | unsigned blk512 :1; /* Supports 512 bytes block size */ |
280 | unsigned reserved7_0 :1; |
281 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
282 | unsigned reserved7_0 :1; |
283 | unsigned blk512 :1; /* Supports 512 bytes block size */ |
284 | unsigned blk1024 :1; /* Supports 1024 bytes block size */ |
285 | unsigned reserved7_3_6 :4; |
286 | unsigned blk32768 :1; /* slowb - the device restricts the byte count for PIO */ |
287 | /* transfers for slow buffer memory ??? */ |
288 | /* Also 32768 block size in some cases */ |
289 | #else |
290 | #error "Please fix <asm/byteorder.h>" |
291 | #endif |
292 | __be16 max_speed; /* Maximum speed supported in KBps */ |
293 | u8 reserved10, reserved11; |
294 | __be16 ctl; /* Continuous Transfer Limit in blocks */ |
295 | __be16 speed; /* Current Speed, in KBps */ |
296 | __be16 buffer_size; /* Buffer Size, in 512 bytes */ |
297 | u8 reserved18, reserved19; |
298 | } osst_capabilities_page_t; |
299 | |
300 | /* |
301 | * Block Size Page |
302 | */ |
303 | typedef struct { |
304 | #if defined(__BIG_ENDIAN_BITFIELD) |
305 | unsigned ps :1; |
306 | unsigned reserved1_6 :1; |
307 | unsigned page_code :6; /* Page code - Should be 0x30 */ |
308 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
309 | unsigned page_code :6; /* Page code - Should be 0x30 */ |
310 | unsigned reserved1_6 :1; |
311 | unsigned ps :1; |
312 | #else |
313 | #error "Please fix <asm/byteorder.h>" |
314 | #endif |
315 | u8 page_length; /* Page Length - Should be 2 */ |
316 | u8 reserved2; |
317 | #if defined(__BIG_ENDIAN_BITFIELD) |
318 | unsigned one :1; |
319 | unsigned reserved2_6 :1; |
320 | unsigned record32_5 :1; |
321 | unsigned record32 :1; |
322 | unsigned reserved2_23 :2; |
323 | unsigned play32_5 :1; |
324 | unsigned play32 :1; |
325 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
326 | unsigned play32 :1; |
327 | unsigned play32_5 :1; |
328 | unsigned reserved2_23 :2; |
329 | unsigned record32 :1; |
330 | unsigned record32_5 :1; |
331 | unsigned reserved2_6 :1; |
332 | unsigned one :1; |
333 | #else |
334 | #error "Please fix <asm/byteorder.h>" |
335 | #endif |
336 | } osst_block_size_page_t; |
337 | |
338 | /* |
339 | * Tape Parameters Page |
340 | */ |
341 | typedef struct { |
342 | #if defined(__BIG_ENDIAN_BITFIELD) |
343 | unsigned ps :1; |
344 | unsigned reserved1_6 :1; |
345 | unsigned page_code :6; /* Page code - Should be 0x2b */ |
346 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
347 | unsigned page_code :6; /* Page code - Should be 0x2b */ |
348 | unsigned reserved1_6 :1; |
349 | unsigned ps :1; |
350 | #else |
351 | #error "Please fix <asm/byteorder.h>" |
352 | #endif |
353 | u8 reserved2; |
354 | u8 density; |
355 | u8 reserved3,reserved4; |
356 | __be16 segtrk; |
357 | __be16 trks; |
358 | u8 reserved5,reserved6,reserved7,reserved8,reserved9,reserved10; |
359 | } osst_tape_paramtr_page_t; |
360 | |
361 | /* OnStream definitions */ |
362 | |
363 | #define OS_CONFIG_PARTITION (0xff) |
364 | #define OS_DATA_PARTITION (0) |
365 | #define OS_PARTITION_VERSION (1) |
366 | |
367 | /* |
368 | * partition |
369 | */ |
370 | typedef struct os_partition_s { |
371 | __u8 partition_num; |
372 | __u8 par_desc_ver; |
373 | __be16 wrt_pass_cntr; |
374 | __be32 first_frame_ppos; |
375 | __be32 last_frame_ppos; |
376 | __be32 eod_frame_ppos; |
377 | } os_partition_t; |
378 | |
379 | /* |
380 | * DAT entry |
381 | */ |
382 | typedef struct os_dat_entry_s { |
383 | __be32 blk_sz; |
384 | __be16 blk_cnt; |
385 | __u8 flags; |
386 | __u8 reserved; |
387 | } os_dat_entry_t; |
388 | |
389 | /* |
390 | * DAT |
391 | */ |
392 | #define OS_DAT_FLAGS_DATA (0xc) |
393 | #define OS_DAT_FLAGS_MARK (0x1) |
394 | |
395 | typedef struct os_dat_s { |
396 | __u8 dat_sz; |
397 | __u8 reserved1; |
398 | __u8 entry_cnt; |
399 | __u8 reserved3; |
400 | os_dat_entry_t dat_list[16]; |
401 | } os_dat_t; |
402 | |
403 | /* |
404 | * Frame types |
405 | */ |
406 | #define OS_FRAME_TYPE_FILL (0) |
407 | #define OS_FRAME_TYPE_EOD (1 << 0) |
408 | #define OS_FRAME_TYPE_MARKER (1 << 1) |
409 | #define OS_FRAME_TYPE_HEADER (1 << 3) |
410 | #define OS_FRAME_TYPE_DATA (1 << 7) |
411 | |
412 | /* |
413 | * AUX |
414 | */ |
415 | typedef struct os_aux_s { |
416 | __be32 format_id; /* hardware compability AUX is based on */ |
417 | char application_sig[4]; /* driver used to write this media */ |
418 | __be32 hdwr; /* reserved */ |
419 | __be32 update_frame_cntr; /* for configuration frame */ |
420 | __u8 frame_type; |
421 | __u8 frame_type_reserved; |
422 | __u8 reserved_18_19[2]; |
423 | os_partition_t partition; |
424 | __u8 reserved_36_43[8]; |
425 | __be32 frame_seq_num; |
426 | __be32 logical_blk_num_high; |
427 | __be32 logical_blk_num; |
428 | os_dat_t dat; |
429 | __u8 reserved188_191[4]; |
430 | __be32 filemark_cnt; |
431 | __be32 phys_fm; |
432 | __be32 last_mark_ppos; |
433 | __u8 reserved204_223[20]; |
434 | |
435 | /* |
436 | * __u8 app_specific[32]; |
437 | * |
438 | * Linux specific fields: |
439 | */ |
440 | __be32 next_mark_ppos; /* when known, points to next marker */ |
441 | __be32 last_mark_lbn; /* storing log_blk_num of last mark is extends ADR spec */ |
442 | __u8 linux_specific[24]; |
443 | |
444 | __u8 reserved_256_511[256]; |
445 | } os_aux_t; |
446 | |
447 | #define OS_FM_TAB_MAX 1024 |
448 | |
449 | typedef struct os_fm_tab_s { |
450 | __u8 fm_part_num; |
451 | __u8 reserved_1; |
452 | __u8 fm_tab_ent_sz; |
453 | __u8 reserved_3; |
454 | __be16 fm_tab_ent_cnt; |
455 | __u8 reserved6_15[10]; |
456 | __be32 fm_tab_ent[OS_FM_TAB_MAX]; |
457 | } os_fm_tab_t; |
458 | |
459 | typedef struct os_ext_trk_ey_s { |
460 | __u8 et_part_num; |
461 | __u8 fmt; |
462 | __be16 fm_tab_off; |
463 | __u8 reserved4_7[4]; |
464 | __be32 last_hlb_hi; |
465 | __be32 last_hlb; |
466 | __be32 last_pp; |
467 | __u8 reserved20_31[12]; |
468 | } os_ext_trk_ey_t; |
469 | |
470 | typedef struct os_ext_trk_tb_s { |
471 | __u8 nr_stream_part; |
472 | __u8 reserved_1; |
473 | __u8 et_ent_sz; |
474 | __u8 reserved3_15[13]; |
475 | os_ext_trk_ey_t dat_ext_trk_ey; |
476 | os_ext_trk_ey_t qfa_ext_trk_ey; |
477 | } os_ext_trk_tb_t; |
478 | |
479 | typedef struct os_header_s { |
480 | char ident_str[8]; |
481 | __u8 major_rev; |
482 | __u8 minor_rev; |
483 | __be16 ext_trk_tb_off; |
484 | __u8 reserved12_15[4]; |
485 | __u8 pt_par_num; |
486 | __u8 pt_reserved1_3[3]; |
487 | os_partition_t partition[16]; |
488 | __be32 cfg_col_width; |
489 | __be32 dat_col_width; |
490 | __be32 qfa_col_width; |
491 | __u8 cartridge[16]; |
492 | __u8 reserved304_511[208]; |
493 | __be32 old_filemark_list[16680/4]; /* in ADR 1.4 __u8 track_table[16680] */ |
494 | os_ext_trk_tb_t ext_track_tb; |
495 | __u8 reserved17272_17735[464]; |
496 | os_fm_tab_t dat_fm_tab; |
497 | os_fm_tab_t qfa_fm_tab; |
498 | __u8 reserved25960_32767[6808]; |
499 | } os_header_t; |
500 | |
501 | |
502 | /* |
503 | * OnStream ADRL frame |
504 | */ |
505 | #define OS_FRAME_SIZE (32 * 1024 + 512) |
506 | #define OS_DATA_SIZE (32 * 1024) |
507 | #define OS_AUX_SIZE (512) |
508 | //#define OSST_MAX_SG 2 |
509 | |
510 | /* The OnStream tape buffer descriptor. */ |
511 | struct osst_buffer { |
512 | unsigned char in_use; |
513 | unsigned char dma; /* DMA-able buffer */ |
514 | int buffer_size; |
515 | int buffer_blocks; |
516 | int buffer_bytes; |
517 | int read_pointer; |
518 | int writing; |
519 | int midlevel_result; |
520 | int syscall_result; |
521 | struct osst_request *last_SRpnt; |
522 | struct st_cmdstatus cmdstat; |
523 | struct rq_map_data map_data; |
524 | unsigned char *b_data; |
525 | os_aux_t *aux; /* onstream AUX structure at end of each block */ |
526 | unsigned short use_sg; /* zero or number of s/g segments for this adapter */ |
527 | unsigned short sg_segs; /* number of segments in s/g list */ |
528 | unsigned short orig_sg_segs; /* number of segments allocated at first try */ |
529 | struct scatterlist sg[1]; /* MUST BE last item */ |
530 | } ; |
531 | |
532 | /* The OnStream tape drive descriptor */ |
533 | struct osst_tape { |
534 | struct scsi_driver *driver; |
535 | unsigned capacity; |
536 | struct scsi_device *device; |
537 | struct mutex lock; /* for serialization */ |
538 | struct completion wait; /* for SCSI commands */ |
539 | struct osst_buffer * buffer; |
540 | |
541 | /* Drive characteristics */ |
542 | unsigned char omit_blklims; |
543 | unsigned char do_auto_lock; |
544 | unsigned char can_bsr; |
545 | unsigned char can_partitions; |
546 | unsigned char two_fm; |
547 | unsigned char fast_mteom; |
548 | unsigned char restr_dma; |
549 | unsigned char scsi2_logical; |
550 | unsigned char default_drvbuffer; /* 0xff = don't touch, value 3 bits */ |
551 | unsigned char pos_unknown; /* after reset position unknown */ |
552 | int write_threshold; |
553 | int timeout; /* timeout for normal commands */ |
554 | int long_timeout; /* timeout for commands known to take long time*/ |
555 | |
556 | /* Mode characteristics */ |
557 | struct st_modedef modes[ST_NBR_MODES]; |
558 | int current_mode; |
559 | |
560 | /* Status variables */ |
561 | int partition; |
562 | int new_partition; |
563 | int nbr_partitions; /* zero until partition support enabled */ |
564 | struct st_partstat ps[ST_NBR_PARTITIONS]; |
565 | unsigned char dirty; |
566 | unsigned char ready; |
567 | unsigned char write_prot; |
568 | unsigned char drv_write_prot; |
569 | unsigned char in_use; |
570 | unsigned char blksize_changed; |
571 | unsigned char density_changed; |
572 | unsigned char compression_changed; |
573 | unsigned char drv_buffer; |
574 | unsigned char density; |
575 | unsigned char door_locked; |
576 | unsigned char rew_at_close; |
577 | unsigned char inited; |
578 | int block_size; |
579 | int min_block; |
580 | int max_block; |
581 | int recover_count; /* from tape opening */ |
582 | int abort_count; |
583 | int write_count; |
584 | int read_count; |
585 | int recover_erreg; /* from last status call */ |
586 | /* |
587 | * OnStream specific data |
588 | */ |
589 | int os_fw_rev; /* the firmware revision * 10000 */ |
590 | unsigned char raw; /* flag OnStream raw access (32.5KB block size) */ |
591 | unsigned char poll; /* flag that this drive needs polling (IDE|firmware) */ |
592 | unsigned char frame_in_buffer; /* flag that the frame as per frame_seq_number |
593 | * has been read into STp->buffer and is valid */ |
594 | int frame_seq_number; /* logical frame number */ |
595 | int logical_blk_num; /* logical block number */ |
596 | unsigned first_frame_position; /* physical frame to be transferred to/from host */ |
597 | unsigned last_frame_position; /* physical frame to be transferd to/from tape */ |
598 | int cur_frames; /* current number of frames in internal buffer */ |
599 | int max_frames; /* max number of frames in internal buffer */ |
600 | char application_sig[5]; /* application signature */ |
601 | unsigned char fast_open; /* flag that reminds us we didn't check headers at open */ |
602 | unsigned short wrt_pass_cntr; /* write pass counter */ |
603 | int update_frame_cntr; /* update frame counter */ |
604 | int onstream_write_error; /* write error recovery active */ |
605 | int header_ok; /* header frame verified ok */ |
606 | int linux_media; /* reading linux-specifc media */ |
607 | int linux_media_version; |
608 | os_header_t * header_cache; /* cache is kept for filemark positions */ |
609 | int filemark_cnt; |
610 | int first_mark_ppos; |
611 | int last_mark_ppos; |
612 | int last_mark_lbn; /* storing log_blk_num of last mark is extends ADR spec */ |
613 | int first_data_ppos; |
614 | int eod_frame_ppos; |
615 | int eod_frame_lfa; |
616 | int write_type; /* used in write error recovery */ |
617 | int read_error_frame; /* used in read error recovery */ |
618 | unsigned long cmd_start_time; |
619 | unsigned long max_cmd_time; |
620 | |
621 | #if DEBUG |
622 | unsigned char write_pending; |
623 | int nbr_finished; |
624 | int nbr_waits; |
625 | unsigned char last_cmnd[6]; |
626 | unsigned char last_sense[16]; |
627 | #endif |
628 | struct gendisk *drive; |
629 | } ; |
630 | |
631 | /* scsi tape command */ |
632 | struct osst_request { |
633 | unsigned char cmd[MAX_COMMAND_SIZE]; |
634 | unsigned char sense[SCSI_SENSE_BUFFERSIZE]; |
635 | int result; |
636 | struct osst_tape *stp; |
637 | struct completion *waiting; |
638 | struct bio *bio; |
639 | }; |
640 | |
641 | /* Values of write_type */ |
642 | #define OS_WRITE_DATA 0 |
643 | #define OS_WRITE_EOD 1 |
644 | #define OS_WRITE_NEW_MARK 2 |
645 | #define OS_WRITE_LAST_MARK 3 |
646 | #define OS_WRITE_HEADER 4 |
647 | #define OS_WRITE_FILLER 5 |
648 | |
649 | /* Additional rw state */ |
650 | #define OS_WRITING_COMPLETE 3 |
651 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
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master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9