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