Lines Matching +full:sc +full:- +full:partitions
1 // SPDX-License-Identifier: GPL-2.0-only
13 Copyright 1992 - 2016 Kai Makisara
16 Some small formal changes - aeb, 950809
18 Last modified: 18-JAN-1998 Richard Gooch <rgooch@atnf.csiro.au> Devfs support
62 is defined and non-zero. */
159 6-byte SCSI read and write commands. */
160 #if ST_FIXED_BUFFER_SIZE >= (2 << 24 - 1)
161 #error "Buffer size should not exceed (2 << 24 - 1) bytes!"
174 /* Remove mode bits and auto-rewind bit (7) */
176 (iminor(x) & ((1 << ST_MODE_SHIFT)-1)))
179 /* Construct the minor number from the device (d), mode (m), and non-rewind (n) data */
236 {"OnStream", "SC-", "", "osst"}, \
237 {"OnStream", "DI-", "", "osst"}, \
238 {"OnStream", "DP-", "", "osst"}, \
240 {"OnStream", "FW-", "", "osst"}
253 kref_get(&STp->kref); in scsi_tape_get()
255 if (!STp->device) in scsi_tape_get()
258 if (scsi_device_get(STp->device)) in scsi_tape_get()
264 kref_put(&STp->kref, scsi_tape_release); in scsi_tape_get()
274 struct scsi_device *sdev = STp->device; in scsi_tape_put()
277 kref_put(&STp->kref, scsi_tape_release); in scsi_tape_put()
290 /* {"XXX", "Yy-", "", NULL}, example */
300 for (rp=&(reject_list[0]); rp->vendor != NULL; rp++) in st_incompatible()
301 if (!strncmp(rp->vendor, SDp->vendor, strlen(rp->vendor)) && in st_incompatible()
302 !strncmp(rp->model, SDp->model, strlen(rp->model)) && in st_incompatible()
303 !strncmp(rp->rev, SDp->rev, strlen(rp->rev))) { in st_incompatible()
304 if (rp->driver_hint) in st_incompatible()
305 return rp->driver_hint; in st_incompatible()
314 sdev_prefix_printk(prefix, (t)->device, (t)->name, fmt, ##a)
325 const u8 *sense = SRpnt->sense; in st_analyze_sense()
327 s->have_sense = scsi_normalize_sense(SRpnt->sense, in st_analyze_sense()
328 SCSI_SENSE_BUFFERSIZE, &s->sense_hdr); in st_analyze_sense()
329 s->flags = 0; in st_analyze_sense()
331 if (s->have_sense) { in st_analyze_sense()
332 s->deferred = 0; in st_analyze_sense()
333 s->remainder_valid = in st_analyze_sense()
334 scsi_get_sense_info_fld(sense, SCSI_SENSE_BUFFERSIZE, &s->uremainder64); in st_analyze_sense()
337 s->deferred = 1; in st_analyze_sense()
340 s->fixed_format = 1; in st_analyze_sense()
341 s->flags = sense[2] & 0xe0; in st_analyze_sense()
344 s->deferred = 1; in st_analyze_sense()
347 s->fixed_format = 0; in st_analyze_sense()
349 s->flags = ucp ? (ucp[3] & 0xe0) : 0; in st_analyze_sense()
359 int result = SRpnt->result; in st_chk_result()
362 char *name = STp->name; in st_chk_result()
368 cmdstatp = &STp->buffer->cmdstat; in st_chk_result()
371 if (cmdstatp->have_sense) in st_chk_result()
372 scode = STp->buffer->cmdstat.sense_hdr.sense_key; in st_chk_result()
380 SRpnt->cmd[0], SRpnt->cmd[1], SRpnt->cmd[2], in st_chk_result()
381 SRpnt->cmd[3], SRpnt->cmd[4], SRpnt->cmd[5]); in st_chk_result()
382 if (cmdstatp->have_sense) in st_chk_result()
383 __scsi_print_sense(STp->device, name, in st_chk_result()
384 SRpnt->sense, SCSI_SENSE_BUFFERSIZE); in st_chk_result()
387 if (!cmdstatp->have_sense) in st_chk_result()
391 else if (cmdstatp->have_sense && in st_chk_result()
397 SRpnt->cmd[0] != MODE_SENSE && in st_chk_result()
398 SRpnt->cmd[0] != TEST_UNIT_READY) { in st_chk_result()
400 __scsi_print_sense(STp->device, name, in st_chk_result()
401 SRpnt->sense, SCSI_SENSE_BUFFERSIZE); in st_chk_result()
405 if (cmdstatp->fixed_format && in st_chk_result()
406 STp->cln_mode >= EXTENDED_SENSE_START) { /* Only fixed format sense */ in st_chk_result()
407 if (STp->cln_sense_value) in st_chk_result()
408 STp->cleaning_req |= ((SRpnt->sense[STp->cln_mode] & in st_chk_result()
409 STp->cln_sense_mask) == STp->cln_sense_value); in st_chk_result()
411 STp->cleaning_req |= ((SRpnt->sense[STp->cln_mode] & in st_chk_result()
412 STp->cln_sense_mask) != 0); in st_chk_result()
414 if (cmdstatp->have_sense && in st_chk_result()
415 cmdstatp->sense_hdr.asc == 0 && cmdstatp->sense_hdr.ascq == 0x17) in st_chk_result()
416 STp->cleaning_req = 1; /* ASC and ASCQ => cleaning requested */ in st_chk_result()
417 if (cmdstatp->have_sense && scode == UNIT_ATTENTION && cmdstatp->sense_hdr.asc == 0x29) in st_chk_result()
418 STp->pos_unknown = 1; /* ASC => power on / reset */ in st_chk_result()
420 STp->pos_unknown |= STp->device->was_reset; in st_chk_result()
422 if (cmdstatp->have_sense && in st_chk_result()
425 && SRpnt->cmd[0] != WRITE_6 in st_chk_result()
426 && SRpnt->cmd[0] != WRITE_FILEMARKS in st_chk_result()
429 STp->recover_count++; in st_chk_result()
430 STp->recover_reg++; in st_chk_result()
434 if (SRpnt->cmd[0] == READ_6) in st_chk_result()
436 else if (SRpnt->cmd[0] == WRITE_6) in st_chk_result()
442 stp, STp->recover_count); in st_chk_result()
445 if (cmdstatp->flags == 0) in st_chk_result()
448 return (-EIO); in st_chk_result()
457 streq->stp = stp; in st_allocate_request()
462 stp->buffer->syscall_result = -EINTR; in st_allocate_request()
464 stp->buffer->syscall_result = -EBUSY; in st_allocate_request()
481 if (scmd->cmnd[0] == WRITE_6) { in st_do_stats()
482 now = ktime_sub(now, STp->stats->write_time); in st_do_stats()
483 atomic64_add(ktime_to_ns(now), &STp->stats->tot_write_time); in st_do_stats()
484 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
485 atomic64_inc(&STp->stats->write_cnt); in st_do_stats()
486 if (scmd->result) { in st_do_stats()
487 atomic64_add(atomic_read(&STp->stats->last_write_size) in st_do_stats()
488 - STp->buffer->cmdstat.residual, in st_do_stats()
489 &STp->stats->write_byte_cnt); in st_do_stats()
490 if (STp->buffer->cmdstat.residual > 0) in st_do_stats()
491 atomic64_inc(&STp->stats->resid_cnt); in st_do_stats()
493 atomic64_add(atomic_read(&STp->stats->last_write_size), in st_do_stats()
494 &STp->stats->write_byte_cnt); in st_do_stats()
495 } else if (scmd->cmnd[0] == READ_6) { in st_do_stats()
496 now = ktime_sub(now, STp->stats->read_time); in st_do_stats()
497 atomic64_add(ktime_to_ns(now), &STp->stats->tot_read_time); in st_do_stats()
498 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
499 atomic64_inc(&STp->stats->read_cnt); in st_do_stats()
500 if (scmd->result) { in st_do_stats()
501 atomic64_add(atomic_read(&STp->stats->last_read_size) in st_do_stats()
502 - STp->buffer->cmdstat.residual, in st_do_stats()
503 &STp->stats->read_byte_cnt); in st_do_stats()
504 if (STp->buffer->cmdstat.residual > 0) in st_do_stats()
505 atomic64_inc(&STp->stats->resid_cnt); in st_do_stats()
507 atomic64_add(atomic_read(&STp->stats->last_read_size), in st_do_stats()
508 &STp->stats->read_byte_cnt); in st_do_stats()
510 now = ktime_sub(now, STp->stats->other_time); in st_do_stats()
511 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
512 atomic64_inc(&STp->stats->other_cnt); in st_do_stats()
514 atomic64_dec(&STp->stats->in_flight); in st_do_stats()
521 struct st_request *SRpnt = req->end_io_data; in st_scsi_execute_end()
522 struct scsi_tape *STp = SRpnt->stp; in st_scsi_execute_end()
525 STp->buffer->cmdstat.midlevel_result = SRpnt->result = scmd->result; in st_scsi_execute_end()
526 STp->buffer->cmdstat.residual = scmd->resid_len; in st_scsi_execute_end()
530 tmp = SRpnt->bio; in st_scsi_execute_end()
531 if (scmd->sense_len) in st_scsi_execute_end()
532 memcpy(SRpnt->sense, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); in st_scsi_execute_end()
533 if (SRpnt->waiting) in st_scsi_execute_end()
534 complete(SRpnt->waiting); in st_scsi_execute_end()
546 struct rq_map_data *mdata = &SRpnt->stp->buffer->map_data; in st_scsi_execute()
548 struct scsi_tape *STp = SRpnt->stp; in st_scsi_execute()
551 req = scsi_alloc_request(SRpnt->stp->device->request_queue, in st_scsi_execute()
557 req->rq_flags |= RQF_QUIET; in st_scsi_execute()
559 mdata->null_mapped = 1; in st_scsi_execute()
562 err = blk_rq_map_user(req->q, req, mdata, NULL, bufflen, in st_scsi_execute()
570 atomic64_inc(&STp->stats->in_flight); in st_scsi_execute()
572 atomic_set(&STp->stats->last_write_size, bufflen); in st_scsi_execute()
573 STp->stats->write_time = ktime_get(); in st_scsi_execute()
575 atomic_set(&STp->stats->last_read_size, bufflen); in st_scsi_execute()
576 STp->stats->read_time = ktime_get(); in st_scsi_execute()
578 STp->stats->other_time = ktime_get(); in st_scsi_execute()
581 SRpnt->bio = req->bio; in st_scsi_execute()
582 scmd->cmd_len = COMMAND_SIZE(cmd[0]); in st_scsi_execute()
583 memcpy(scmd->cmnd, cmd, scmd->cmd_len); in st_scsi_execute()
584 req->timeout = timeout; in st_scsi_execute()
585 scmd->allowed = retries; in st_scsi_execute()
586 req->end_io = st_scsi_execute_end; in st_scsi_execute()
587 req->end_io_data = SRpnt; in st_scsi_execute()
601 struct rq_map_data *mdata = &STp->buffer->map_data; in st_do_scsi()
605 if (!do_wait && ((STp->buffer)->last_SRpnt)) { in st_do_scsi()
609 (STp->buffer)->syscall_result = (-EINTR); in st_do_scsi()
611 (STp->buffer)->syscall_result = (-EBUSY); in st_do_scsi()
624 (STp->buffer)->last_SRpnt = SRpnt; in st_do_scsi()
626 waiting = &STp->wait; in st_do_scsi()
628 SRpnt->waiting = waiting; in st_do_scsi()
630 if (STp->buffer->do_dio) { in st_do_scsi()
631 mdata->page_order = 0; in st_do_scsi()
632 mdata->nr_entries = STp->buffer->sg_segs; in st_do_scsi()
633 mdata->pages = STp->buffer->mapped_pages; in st_do_scsi()
635 mdata->page_order = STp->buffer->reserved_page_order; in st_do_scsi()
636 mdata->nr_entries = in st_do_scsi()
637 DIV_ROUND_UP(bytes, PAGE_SIZE << mdata->page_order); in st_do_scsi()
638 mdata->pages = STp->buffer->reserved_pages; in st_do_scsi()
639 mdata->offset = 0; in st_do_scsi()
642 memcpy(SRpnt->cmd, cmd, sizeof(SRpnt->cmd)); in st_do_scsi()
643 STp->buffer->cmdstat.have_sense = 0; in st_do_scsi()
644 STp->buffer->syscall_result = 0; in st_do_scsi()
650 (STp->buffer)->syscall_result = (-EBUSY); in st_do_scsi()
651 (STp->buffer)->last_SRpnt = NULL; in st_do_scsi()
654 SRpnt->waiting = NULL; in st_do_scsi()
655 (STp->buffer)->syscall_result = st_chk_result(STp, SRpnt); in st_do_scsi()
662 /* Handle the write-behind checking (waits for completion). Returns -ENOSPC if
663 write has been correct but EOM early warning reached, -EIO if write ended in
674 STbuffer = STp->buffer; in write_behind_check()
675 if (!STbuffer->writing) in write_behind_check()
679 if (STp->write_pending) in write_behind_check()
680 STp->nbr_waits++; in write_behind_check()
682 STp->nbr_finished++; in write_behind_check()
685 wait_for_completion(&(STp->wait)); in write_behind_check()
686 SRpnt = STbuffer->last_SRpnt; in write_behind_check()
687 STbuffer->last_SRpnt = NULL; in write_behind_check()
688 SRpnt->waiting = NULL; in write_behind_check()
690 (STp->buffer)->syscall_result = st_chk_result(STp, SRpnt); in write_behind_check()
693 STbuffer->buffer_bytes -= STbuffer->writing; in write_behind_check()
694 STps = &(STp->ps[STp->partition]); in write_behind_check()
695 if (STps->drv_block >= 0) { in write_behind_check()
696 if (STp->block_size == 0) in write_behind_check()
697 STps->drv_block++; in write_behind_check()
699 STps->drv_block += STbuffer->writing / STp->block_size; in write_behind_check()
702 cmdstatp = &STbuffer->cmdstat; in write_behind_check()
703 if (STbuffer->syscall_result) { in write_behind_check()
704 retval = -EIO; in write_behind_check()
705 if (cmdstatp->have_sense && !cmdstatp->deferred && in write_behind_check()
706 (cmdstatp->flags & SENSE_EOM) && in write_behind_check()
707 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in write_behind_check()
708 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR)) { in write_behind_check()
709 /* EOM at write-behind, has all data been written? */ in write_behind_check()
710 if (!cmdstatp->remainder_valid || in write_behind_check()
711 cmdstatp->uremainder64 == 0) in write_behind_check()
712 retval = -ENOSPC; in write_behind_check()
714 if (retval == -EIO) in write_behind_check()
715 STps->drv_block = -1; in write_behind_check()
717 STbuffer->writing = 0; in write_behind_check()
722 STbuffer->cmdstat.midlevel_result, retval);) /* end DEB */ in write_behind_check()
741 cmd[2] = cmd[3] = cmd[4] = 0xff; /* -1 filemarks */ in cross_eof()
748 STp->device->request_queue->rq_timeout, in cross_eof()
751 return (STp->buffer)->syscall_result; in cross_eof()
756 if ((STp->buffer)->cmdstat.midlevel_result != 0) in cross_eof()
761 return (STp->buffer)->syscall_result; in cross_eof()
779 if (STp->dirty == 1) { in st_flush_write_buffer()
781 transfer = STp->buffer->buffer_bytes; in st_flush_write_buffer()
787 blks = transfer / STp->block_size; in st_flush_write_buffer()
793 STp->device->request_queue->rq_timeout, in st_flush_write_buffer()
796 return (STp->buffer)->syscall_result; in st_flush_write_buffer()
798 STps = &(STp->ps[STp->partition]); in st_flush_write_buffer()
799 if ((STp->buffer)->syscall_result != 0) { in st_flush_write_buffer()
800 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush_write_buffer()
802 if (cmdstatp->have_sense && !cmdstatp->deferred && in st_flush_write_buffer()
803 (cmdstatp->flags & SENSE_EOM) && in st_flush_write_buffer()
804 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_flush_write_buffer()
805 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) && in st_flush_write_buffer()
806 (!cmdstatp->remainder_valid || in st_flush_write_buffer()
807 cmdstatp->uremainder64 == 0)) { /* All written at EOM early warning */ in st_flush_write_buffer()
808 STp->dirty = 0; in st_flush_write_buffer()
809 (STp->buffer)->buffer_bytes = 0; in st_flush_write_buffer()
810 if (STps->drv_block >= 0) in st_flush_write_buffer()
811 STps->drv_block += blks; in st_flush_write_buffer()
812 result = (-ENOSPC); in st_flush_write_buffer()
815 STps->drv_block = (-1); in st_flush_write_buffer()
816 result = (-EIO); in st_flush_write_buffer()
819 if (STps->drv_block >= 0) in st_flush_write_buffer()
820 STps->drv_block += blks; in st_flush_write_buffer()
821 STp->dirty = 0; in st_flush_write_buffer()
822 (STp->buffer)->buffer_bytes = 0; in st_flush_write_buffer()
838 if (STp->ready != ST_READY) in flush_buffer()
845 if (STp->pos_unknown) in flush_buffer()
846 return (-EIO); in flush_buffer()
848 STps = &(STp->ps[STp->partition]); in flush_buffer()
849 if (STps->rw == ST_WRITING) /* Writing */ in flush_buffer()
852 if (STp->block_size == 0) in flush_buffer()
855 backspace = ((STp->buffer)->buffer_bytes + in flush_buffer()
856 (STp->buffer)->read_pointer) / STp->block_size - in flush_buffer()
857 ((STp->buffer)->read_pointer + STp->block_size - 1) / in flush_buffer()
858 STp->block_size; in flush_buffer()
859 (STp->buffer)->buffer_bytes = 0; in flush_buffer()
860 (STp->buffer)->read_pointer = 0; in flush_buffer()
863 if (STps->eof == ST_FM_HIT) { in flush_buffer()
866 STps->eof = ST_NOEOF; in flush_buffer()
868 if (STps->drv_file >= 0) in flush_buffer()
869 STps->drv_file++; in flush_buffer()
870 STps->drv_block = 0; in flush_buffer()
875 } else if (STps->eof == ST_FM_HIT) { in flush_buffer()
876 if (STps->drv_file >= 0) in flush_buffer()
877 STps->drv_file++; in flush_buffer()
878 STps->drv_block = 0; in flush_buffer()
879 STps->eof = ST_NOEOF; in flush_buffer()
891 if (!STp->density_changed && in set_mode_densblk()
892 STm->default_density >= 0 && in set_mode_densblk()
893 STm->default_density != STp->density) { in set_mode_densblk()
894 arg = STm->default_density; in set_mode_densblk()
897 arg = STp->density; in set_mode_densblk()
899 if (!STp->blksize_changed && in set_mode_densblk()
900 STm->default_blksize >= 0 && in set_mode_densblk()
901 STm->default_blksize != STp->block_size) { in set_mode_densblk()
902 arg |= STm->default_blksize; in set_mode_densblk()
905 arg |= STp->block_size; in set_mode_densblk()
911 STm->default_blksize, STm->default_density); in set_mode_densblk()
913 return (-EINVAL); in set_mode_densblk()
926 retval = scsi_set_medium_removal(STp->device, in do_door_lock()
929 STp->door_locked = do_lock ? ST_LOCKED_EXPLICIT : ST_UNLOCKED; in do_door_lock()
931 STp->door_locked = ST_LOCK_FAILS; in do_door_lock()
942 STp->pos_unknown = 0; in reset_state()
944 STps = &(STp->ps[i]); in reset_state()
945 STps->rw = ST_IDLE; in reset_state()
946 STps->eof = ST_NOEOF; in reset_state()
947 STps->at_sm = 0; in reset_state()
948 STps->last_block_valid = 0; in reset_state()
949 STps->drv_block = -1; in reset_state()
950 STps->drv_file = -1; in reset_state()
952 if (STp->can_partitions) { in reset_state()
953 STp->partition = find_partition(STp); in reset_state()
954 if (STp->partition < 0) in reset_state()
955 STp->partition = 0; in reset_state()
974 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in test_ready()
982 STp->long_timeout, MAX_READY_RETRIES, 1); in test_ready()
985 retval = (STp->buffer)->syscall_result; in test_ready()
989 if (cmdstatp->have_sense) { in test_ready()
991 scode = cmdstatp->sense_hdr.sense_key; in test_ready()
1000 retval = (-EIO); in test_ready()
1008 retval = (-EINTR); in test_ready()
1015 if ((STp->device)->scsi_level >= SCSI_2 && in test_ready()
1016 cmdstatp->sense_hdr.asc == 0x3a) /* Check ASC */ in test_ready()
1025 retval = (STp->buffer)->syscall_result; in test_ready()
1030 if (STp->first_tur) { in test_ready()
1032 STp->pos_unknown = 0; in test_ready()
1033 STp->first_tur = 0; in test_ready()
1051 unsigned short st_flags = filp->f_flags; in check_tape()
1058 STp->ready = ST_READY; in check_tape()
1060 if (mode != STp->current_mode) { in check_tape()
1062 STp->current_mode, mode); in check_tape()
1064 STp->current_mode = mode; in check_tape()
1066 STm = &(STp->modes[STp->current_mode]); in check_tape()
1068 saved_cleaning = STp->cleaning_req; in check_tape()
1069 STp->cleaning_req = 0; in check_tape()
1071 do_wait = ((filp->f_flags & O_NONBLOCK) == 0); in check_tape()
1078 STp->pos_unknown = 0; in check_tape()
1079 STp->partition = STp->new_partition = 0; in check_tape()
1080 if (STp->can_partitions) in check_tape()
1081 STp->nbr_partitions = 1; /* This guess will be updated later in check_tape()
1084 STps = &(STp->ps[i]); in check_tape()
1085 STps->rw = ST_IDLE; in check_tape()
1086 STps->eof = ST_NOEOF; in check_tape()
1087 STps->at_sm = 0; in check_tape()
1088 STps->last_block_valid = 0; in check_tape()
1089 STps->drv_block = 0; in check_tape()
1090 STps->drv_file = 0; in check_tape()
1095 STp->cleaning_req |= saved_cleaning; in check_tape()
1099 STp->ready = ST_NO_TAPE; in check_tape()
1101 STp->ready = ST_NOT_READY; in check_tape()
1103 STp->density = 0; /* Clear the erroneous "residue" */ in check_tape()
1104 STp->write_prot = 0; in check_tape()
1105 STp->block_size = 0; in check_tape()
1106 STp->ps[0].drv_file = STp->ps[0].drv_block = (-1); in check_tape()
1107 STp->partition = STp->new_partition = 0; in check_tape()
1108 STp->door_locked = ST_UNLOCKED; in check_tape()
1113 if (STp->omit_blklims) in check_tape()
1114 STp->min_block = STp->max_block = (-1); in check_tape()
1120 STp->device->request_queue->rq_timeout, in check_tape()
1123 retval = (STp->buffer)->syscall_result; in check_tape()
1127 if (!SRpnt->result && !STp->buffer->cmdstat.have_sense) { in check_tape()
1128 STp->max_block = ((STp->buffer)->b_data[1] << 16) | in check_tape()
1129 ((STp->buffer)->b_data[2] << 8) | (STp->buffer)->b_data[3]; in check_tape()
1130 STp->min_block = ((STp->buffer)->b_data[4] << 8) | in check_tape()
1131 (STp->buffer)->b_data[5]; in check_tape()
1132 if ( DEB( debugging || ) !STp->inited) in check_tape()
1134 "Block limits %d - %d bytes.\n", in check_tape()
1135 STp->min_block, STp->max_block); in check_tape()
1137 STp->min_block = STp->max_block = (-1); in check_tape()
1147 STp->device->request_queue->rq_timeout, in check_tape()
1150 retval = (STp->buffer)->syscall_result; in check_tape()
1154 if ((STp->buffer)->syscall_result != 0) { in check_tape()
1156 STp->block_size = ST_DEFAULT_BLOCK; /* Educated guess (?) */ in check_tape()
1157 (STp->buffer)->syscall_result = 0; /* Prevent error propagation */ in check_tape()
1158 STp->drv_write_prot = 0; in check_tape()
1162 (STp->buffer)->b_data[0], in check_tape()
1163 (STp->buffer)->b_data[1], in check_tape()
1164 (STp->buffer)->b_data[2], in check_tape()
1165 (STp->buffer)->b_data[3]); in check_tape()
1167 if ((STp->buffer)->b_data[3] >= 8) { in check_tape()
1168 STp->drv_buffer = ((STp->buffer)->b_data[2] >> 4) & 7; in check_tape()
1169 STp->density = (STp->buffer)->b_data[4]; in check_tape()
1170 STp->block_size = (STp->buffer)->b_data[9] * 65536 + in check_tape()
1171 (STp->buffer)->b_data[10] * 256 + (STp->buffer)->b_data[11]; in check_tape()
1174 STp->density, in check_tape()
1175 (STp->buffer)->b_data[5] * 65536 + in check_tape()
1176 (STp->buffer)->b_data[6] * 256 + in check_tape()
1177 (STp->buffer)->b_data[7], in check_tape()
1178 STp->drv_buffer); in check_tape()
1180 STp->drv_write_prot = ((STp->buffer)->b_data[2] & 0x80) != 0; in check_tape()
1181 if (!STp->drv_buffer && STp->immediate_filemark) { in check_tape()
1183 "non-buffered tape: disabling " in check_tape()
1185 STp->immediate_filemark = 0; in check_tape()
1190 STp->inited = 1; in check_tape()
1192 if (STp->block_size > 0) in check_tape()
1193 (STp->buffer)->buffer_blocks = in check_tape()
1194 (STp->buffer)->buffer_size / STp->block_size; in check_tape()
1196 (STp->buffer)->buffer_blocks = 1; in check_tape()
1197 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in check_tape()
1200 STp->block_size, (STp->buffer)->buffer_size, in check_tape()
1201 (STp->buffer)->buffer_blocks); in check_tape()
1203 if (STp->drv_write_prot) { in check_tape()
1204 STp->write_prot = 1; in check_tape()
1211 retval = (-EROFS); in check_tape()
1216 if (STp->can_partitions && STp->nbr_partitions < 1) { in check_tape()
1221 if ((STp->partition = find_partition(STp)) < 0) { in check_tape()
1222 retval = STp->partition; in check_tape()
1225 STp->new_partition = STp->partition; in check_tape()
1226 STp->nbr_partitions = 1; /* This guess will be updated when necessary */ in check_tape()
1230 STp->density_changed = STp->blksize_changed = 0; in check_tape()
1231 STp->compression_changed = 0; in check_tape()
1232 if (!(STm->defaults_for_writes) && in check_tape()
1236 if (STp->default_drvbuffer != 0xff) { in check_tape()
1237 if (st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer)) in check_tape()
1241 STp->default_drvbuffer); in check_tape()
1256 int i, retval = (-EIO); in st_open()
1267 filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE); in st_open()
1270 return -ENXIO; in st_open()
1273 filp->private_data = STp; in st_open()
1276 if (STp->in_use) { in st_open()
1280 return (-EBUSY); in st_open()
1283 STp->in_use = 1; in st_open()
1285 STp->rew_at_close = STp->autorew_dev = (iminor(inode) & 0x80) == 0; in st_open()
1287 if (scsi_autopm_get_device(STp->device) < 0) { in st_open()
1288 retval = -EIO; in st_open()
1292 if (!scsi_block_when_processing_errors(STp->device)) { in st_open()
1293 retval = (-ENXIO); in st_open()
1298 if (!enlarge_buffer(STp->buffer, PAGE_SIZE)) { in st_open()
1301 retval = (-EOVERFLOW); in st_open()
1305 (STp->buffer)->cleared = 0; in st_open()
1306 (STp->buffer)->writing = 0; in st_open()
1307 (STp->buffer)->syscall_result = 0; in st_open()
1309 STp->write_prot = ((filp->f_flags & O_ACCMODE) == O_RDONLY); in st_open()
1311 STp->dirty = 0; in st_open()
1313 STps = &(STp->ps[i]); in st_open()
1314 STps->rw = ST_IDLE; in st_open()
1316 STp->try_dio_now = STp->try_dio; in st_open()
1317 STp->recover_count = 0; in st_open()
1318 DEB( STp->nbr_waits = STp->nbr_finished = 0; in st_open()
1319 STp->nbr_requests = STp->nbr_dio = STp->nbr_pages = 0; ) in st_open()
1324 if ((filp->f_flags & O_NONBLOCK) == 0 && in st_open()
1326 if (STp->ready == NO_TAPE) in st_open()
1327 retval = (-ENOMEDIUM); in st_open()
1329 retval = (-EIO); in st_open()
1335 normalize_buffer(STp->buffer); in st_open()
1337 STp->in_use = 0; in st_open()
1340 scsi_autopm_put_device(STp->device); in st_open()
1353 struct scsi_tape *STp = filp->private_data; in st_flush()
1354 struct st_modedef *STm = &(STp->modes[STp->current_mode]); in st_flush()
1355 struct st_partstat *STps = &(STp->ps[STp->partition]); in st_flush()
1360 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1362 if (result != 0 && result != (-ENOSPC)) in st_flush()
1366 if (STp->can_partitions && in st_flush()
1374 DEBC( if (STp->nbr_requests) in st_flush()
1377 "pages %d.\n", STp->nbr_requests, STp->nbr_dio, in st_flush()
1378 STp->nbr_pages)); in st_flush()
1380 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1381 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush()
1385 STp->nbr_waits, STp->nbr_finished); in st_flush()
1389 if (STp->immediate_filemark) in st_flush()
1391 cmd[4] = 1 + STp->two_fm; in st_flush()
1394 STp->device->request_queue->rq_timeout, in st_flush()
1397 result = (STp->buffer)->syscall_result; in st_flush()
1401 if (STp->buffer->syscall_result == 0 || in st_flush()
1402 (cmdstatp->have_sense && !cmdstatp->deferred && in st_flush()
1403 (cmdstatp->flags & SENSE_EOM) && in st_flush()
1404 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_flush()
1405 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) && in st_flush()
1406 (!cmdstatp->remainder_valid || cmdstatp->uremainder64 == 0))) { in st_flush()
1410 if (STps->drv_file >= 0) in st_flush()
1411 STps->drv_file++; in st_flush()
1412 STps->drv_block = 0; in st_flush()
1413 if (STp->two_fm) in st_flush()
1415 STps->eof = ST_FM; in st_flush()
1423 result = (-EIO); in st_flush()
1427 } else if (!STp->rew_at_close) { in st_flush()
1428 STps = &(STp->ps[STp->partition]); in st_flush()
1429 if (!STm->sysv || STps->rw != ST_READING) { in st_flush()
1430 if (STp->can_bsr) in st_flush()
1432 else if (STps->eof == ST_FM_HIT) { in st_flush()
1435 if (STps->drv_file >= 0) in st_flush()
1436 STps->drv_file++; in st_flush()
1437 STps->drv_block = 0; in st_flush()
1438 STps->eof = ST_FM; in st_flush()
1440 STps->eof = ST_NOEOF; in st_flush()
1442 } else if ((STps->eof == ST_NOEOF && in st_flush()
1444 STps->eof == ST_FM_HIT) { in st_flush()
1445 if (STps->drv_file >= 0) in st_flush()
1446 STps->drv_file++; in st_flush()
1447 STps->drv_block = 0; in st_flush()
1448 STps->eof = ST_FM; in st_flush()
1453 if (STp->rew_at_close) { in st_flush()
1466 struct scsi_tape *STp = filp->private_data; in st_release()
1468 if (STp->door_locked == ST_LOCKED_AUTO) in st_release()
1471 normalize_buffer(STp->buffer); in st_release()
1473 STp->in_use = 0; in st_release()
1475 scsi_autopm_put_device(STp->device); in st_release()
1492 if (!scsi_block_when_processing_errors(STp->device)) { in rw_checks()
1493 retval = (-ENXIO); in rw_checks()
1497 if (STp->ready != ST_READY) { in rw_checks()
1498 if (STp->ready == ST_NO_TAPE) in rw_checks()
1499 retval = (-ENOMEDIUM); in rw_checks()
1501 retval = (-EIO); in rw_checks()
1505 if (! STp->modes[STp->current_mode].defined) { in rw_checks()
1506 retval = (-ENXIO); in rw_checks()
1515 if (STp->pos_unknown) { in rw_checks()
1516 retval = (-EIO); in rw_checks()
1524 if (!STp->in_use) { in rw_checks()
1527 retval = (-EIO); in rw_checks()
1531 if (STp->can_partitions && in rw_checks()
1535 if (STp->block_size == 0 && STp->max_block > 0 && in rw_checks()
1536 (count < STp->min_block || count > STp->max_block)) { in rw_checks()
1537 retval = (-EINVAL); in rw_checks()
1541 if (STp->do_auto_lock && STp->door_locked == ST_UNLOCKED && in rw_checks()
1543 STp->door_locked = ST_LOCKED_AUTO; in rw_checks()
1554 struct st_buffer *STbp = STp->buffer; in setup_buffering()
1557 i = STp->try_dio_now && try_rdio; in setup_buffering()
1559 i = STp->try_dio_now && try_wdio; in setup_buffering()
1562 STp->device->request_queue)) == 0) { in setup_buffering()
1563 i = sgl_map_user_pages(STbp, STbp->use_sg, (unsigned long)buf, in setup_buffering()
1566 STbp->do_dio = i; in setup_buffering()
1567 STbp->buffer_bytes = 0; /* can be used as transfer counter */ in setup_buffering()
1570 STbp->do_dio = 0; /* fall back to buffering with any error */ in setup_buffering()
1571 STbp->sg_segs = STbp->do_dio; in setup_buffering()
1573 if (STbp->do_dio) { in setup_buffering()
1574 STp->nbr_dio++; in setup_buffering()
1575 STp->nbr_pages += STbp->do_dio; in setup_buffering()
1579 STbp->do_dio = 0; in setup_buffering()
1580 DEB( STp->nbr_requests++; ) in setup_buffering()
1582 if (!STbp->do_dio) { in setup_buffering()
1583 if (STp->block_size) in setup_buffering()
1584 bufsize = STp->block_size > st_fixed_buffer_size ? in setup_buffering()
1585 STp->block_size : st_fixed_buffer_size; in setup_buffering()
1590 if (is_read && STp->sili && !STbp->cleared) in setup_buffering()
1594 if (bufsize > STbp->buffer_size && in setup_buffering()
1599 retval = (-EOVERFLOW); in setup_buffering()
1602 if (STp->block_size) in setup_buffering()
1603 STbp->buffer_blocks = bufsize / STp->block_size; in setup_buffering()
1616 STbp = STp->buffer; in release_buffering()
1617 if (STbp->do_dio) { in release_buffering()
1618 sgl_unmap_user_pages(STbp, STbp->do_dio, is_read); in release_buffering()
1619 STbp->do_dio = 0; in release_buffering()
1620 STbp->sg_segs = 0; in release_buffering()
1637 struct scsi_tape *STp = filp->private_data; in st_write()
1642 if (mutex_lock_interruptible(&STp->lock)) in st_write()
1643 return -ERESTARTSYS; in st_write()
1650 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_write()
1653 retval = (-EINVAL); in st_write()
1657 STm = &(STp->modes[STp->current_mode]); in st_write()
1658 STps = &(STp->ps[STp->partition]); in st_write()
1660 if (STp->write_prot) { in st_write()
1661 retval = (-EACCES); in st_write()
1666 if (STps->rw == ST_READING) { in st_write()
1670 STps->rw = ST_WRITING; in st_write()
1671 } else if (STps->rw != ST_WRITING && in st_write()
1672 STps->drv_file == 0 && STps->drv_block == 0) { in st_write()
1675 if (STm->default_compression != ST_DONT_TOUCH && in st_write()
1676 !(STp->compression_changed)) { in st_write()
1677 if (st_compression(STp, (STm->default_compression == ST_YES))) { in st_write()
1681 retval = (-EINVAL); in st_write()
1688 STbp = STp->buffer; in st_write()
1691 if (i == -ENOSPC) in st_write()
1692 STps->eof = ST_EOM_OK; in st_write()
1694 STps->eof = ST_EOM_ERROR; in st_write()
1697 if (STps->eof == ST_EOM_OK) { in st_write()
1698 STps->eof = ST_EOD_1; /* allow next write */ in st_write()
1699 retval = (-ENOSPC); in st_write()
1702 else if (STps->eof == ST_EOM_ERROR) { in st_write()
1703 retval = (-EIO); in st_write()
1709 if (STp->block_size != 0 && in st_write()
1710 !STbp->do_dio && in st_write()
1712 copy_from_user(&i, buf + count - 1, 1) != 0)) { in st_write()
1713 retval = (-EFAULT); in st_write()
1725 cmd[1] = (STp->block_size != 0); in st_write()
1727 STps->rw = ST_WRITING; in st_write()
1732 if (STbp->do_dio) { in st_write()
1736 if (STp->block_size == 0) in st_write()
1739 do_count = STbp->buffer_blocks * STp->block_size - in st_write()
1740 STbp->buffer_bytes; in st_write()
1751 count -= do_count; in st_write()
1754 async_write = STp->block_size == 0 && !STbp->do_dio && in st_write()
1755 STm->do_async_writes && STps->eof < ST_EOM_OK; in st_write()
1757 if (STp->block_size != 0 && STm->do_buffer_writes && in st_write()
1758 !(STp->try_dio_now && try_wdio) && STps->eof < ST_EOM_OK && in st_write()
1759 STbp->buffer_bytes < STbp->buffer_size) { in st_write()
1760 STp->dirty = 1; in st_write()
1767 if (STp->block_size == 0) in st_write()
1770 if (!STbp->do_dio) in st_write()
1771 blks = STbp->buffer_bytes; in st_write()
1774 blks /= STp->block_size; in st_write()
1775 transfer = blks * STp->block_size; in st_write()
1782 STp->device->request_queue->rq_timeout, in st_write()
1785 retval = STbp->syscall_result; in st_write()
1788 if (async_write && !STbp->syscall_result) { in st_write()
1789 STbp->writing = transfer; in st_write()
1790 STp->dirty = !(STbp->writing == in st_write()
1791 STbp->buffer_bytes); in st_write()
1793 DEB( STp->write_pending = 1; ) in st_write()
1797 if (STbp->syscall_result != 0) { in st_write()
1798 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_write()
1801 if (cmdstatp->have_sense && (cmdstatp->flags & SENSE_EOM)) { in st_write()
1802 scode = cmdstatp->sense_hdr.sense_key; in st_write()
1803 if (cmdstatp->remainder_valid) in st_write()
1804 undone = (int)cmdstatp->uremainder64; in st_write()
1805 else if (STp->block_size == 0 && in st_write()
1810 if (STp->block_size != 0) in st_write()
1811 undone *= STp->block_size; in st_write()
1815 b_point -= undone; in st_write()
1816 do_count -= undone; in st_write()
1817 if (STp->block_size) in st_write()
1818 blks = (transfer - undone) / STp->block_size; in st_write()
1819 STps->eof = ST_EOM_OK; in st_write()
1824 if (STp->block_size == 0 || in st_write()
1826 retval = (-ENOSPC); /* EOM within current request */ in st_write()
1833 if (!retry_eot && !cmdstatp->deferred && in st_write()
1835 move_buffer_data(STp->buffer, transfer - undone); in st_write()
1837 if (STps->drv_block >= 0) { in st_write()
1838 STps->drv_block += (transfer - undone) / in st_write()
1839 STp->block_size; in st_write()
1841 STps->eof = ST_EOM_OK; in st_write()
1845 STp->buffer->buffer_bytes); in st_write()
1851 count -= do_count; in st_write()
1853 STps->eof = ST_EOM_ERROR; in st_write()
1854 STps->drv_block = (-1); /* Too cautious? */ in st_write()
1855 retval = (-EIO); /* EOM for old data */ in st_write()
1862 STps->drv_block = (-1); /* Too cautious? */ in st_write()
1863 retval = STbp->syscall_result; in st_write()
1868 if (STps->drv_block >= 0) { in st_write()
1869 if (STp->block_size == 0) in st_write()
1870 STps->drv_block += (do_count > 0); in st_write()
1872 STps->drv_block += blks; in st_write()
1875 STbp->buffer_bytes = 0; in st_write()
1876 STp->dirty = 0; in st_write()
1880 retval = total - count; in st_write()
1885 if (STps->eof == ST_EOD_1) in st_write()
1886 STps->eof = ST_EOM_OK; in st_write()
1887 else if (STps->eof != ST_EOM_OK) in st_write()
1888 STps->eof = ST_NOEOF; in st_write()
1889 retval = total - count; in st_write()
1895 mutex_unlock(&STp->lock); in st_write()
1920 STm = &(STp->modes[STp->current_mode]); in read_tape()
1921 STps = &(STp->ps[STp->partition]); in read_tape()
1922 if (STps->eof == ST_FM_HIT) in read_tape()
1924 STbp = STp->buffer; in read_tape()
1926 if (STp->block_size == 0) in read_tape()
1929 if (!(STp->try_dio_now && try_rdio) && STm->do_read_ahead) { in read_tape()
1930 blks = (STp->buffer)->buffer_blocks; in read_tape()
1931 bytes = blks * STp->block_size; in read_tape()
1934 if (!STbp->do_dio && bytes > (STp->buffer)->buffer_size) in read_tape()
1935 bytes = (STp->buffer)->buffer_size; in read_tape()
1936 blks = bytes / STp->block_size; in read_tape()
1937 bytes = blks * STp->block_size; in read_tape()
1943 cmd[1] = (STp->block_size != 0); in read_tape()
1944 if (!cmd[1] && STp->sili) in read_tape()
1952 STp->device->request_queue->rq_timeout, in read_tape()
1957 return STbp->syscall_result; in read_tape()
1959 STbp->read_pointer = 0; in read_tape()
1960 STps->at_sm = 0; in read_tape()
1963 if (STbp->syscall_result) { in read_tape()
1964 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in read_tape()
1969 SRpnt->sense[0], SRpnt->sense[1], in read_tape()
1970 SRpnt->sense[2], SRpnt->sense[3], in read_tape()
1971 SRpnt->sense[4], SRpnt->sense[5], in read_tape()
1972 SRpnt->sense[6], SRpnt->sense[7]); in read_tape()
1973 if (cmdstatp->have_sense) { in read_tape()
1975 if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK) in read_tape()
1976 cmdstatp->flags &= 0xcf; /* No need for EOM in this case */ in read_tape()
1978 if (cmdstatp->flags != 0) { /* EOF, EOM, or ILI */ in read_tape()
1980 if (cmdstatp->remainder_valid) in read_tape()
1981 transfer = (int)cmdstatp->uremainder64; in read_tape()
1984 if (cmdstatp->sense_hdr.sense_key == MEDIUM_ERROR) { in read_tape()
1985 if (STp->block_size == 0) in read_tape()
1988 cmdstatp->flags &= ~SENSE_ILI; in read_tape()
1991 if (cmdstatp->flags & SENSE_ILI) { /* ILI */ in read_tape()
1992 if (STp->block_size == 0 && in read_tape()
1998 bytes - transfer, in read_tape()
2000 if (STps->drv_block >= 0) in read_tape()
2001 STps->drv_block += 1; in read_tape()
2002 STbp->buffer_bytes = 0; in read_tape()
2003 return (-ENOMEM); in read_tape()
2004 } else if (STp->block_size == 0) { in read_tape()
2005 STbp->buffer_bytes = bytes - transfer; in read_tape()
2013 if (STps->drv_block >= 0) in read_tape()
2014 STps->drv_block += blks - transfer + 1; in read_tape()
2016 return (-EIO); in read_tape()
2019 STbp->buffer_bytes = (blks - transfer) * in read_tape()
2020 STp->block_size; in read_tape()
2025 STbp->buffer_bytes); in read_tape()
2026 if (STps->drv_block >= 0) in read_tape()
2027 STps->drv_block += 1; in read_tape()
2029 return (-EIO); in read_tape()
2031 } else if (cmdstatp->flags & SENSE_FMK) { /* FM overrides EOM */ in read_tape()
2032 if (STps->eof != ST_FM_HIT) in read_tape()
2033 STps->eof = ST_FM_HIT; in read_tape()
2035 STps->eof = ST_EOD_2; in read_tape()
2036 if (STp->block_size == 0) in read_tape()
2037 STbp->buffer_bytes = 0; in read_tape()
2039 STbp->buffer_bytes = in read_tape()
2040 bytes - transfer * STp->block_size; in read_tape()
2043 STbp->buffer_bytes); in read_tape()
2044 } else if (cmdstatp->flags & SENSE_EOM) { in read_tape()
2045 if (STps->eof == ST_FM) in read_tape()
2046 STps->eof = ST_EOD_1; in read_tape()
2048 STps->eof = ST_EOM_OK; in read_tape()
2049 if (STp->block_size == 0) in read_tape()
2050 STbp->buffer_bytes = bytes - transfer; in read_tape()
2052 STbp->buffer_bytes = in read_tape()
2053 bytes - transfer * STp->block_size; in read_tape()
2057 STbp->buffer_bytes); in read_tape()
2063 STps->drv_block = (-1); in read_tape()
2064 if (STps->eof == ST_FM && in read_tape()
2065 cmdstatp->sense_hdr.sense_key == BLANK_CHECK) { in read_tape()
2069 STps->eof = ST_EOD_2; /* First BLANK_CHECK after FM */ in read_tape()
2071 retval = (-EIO); in read_tape()
2074 if (STbp->buffer_bytes < 0) /* Caused by bogus sense data */ in read_tape()
2075 STbp->buffer_bytes = 0; in read_tape()
2078 else { /* Non-extended sense */ in read_tape()
2079 retval = STbp->syscall_result; in read_tape()
2085 STbp->buffer_bytes = bytes; in read_tape()
2086 if (STp->sili) /* In fixed block mode residual is always zero here */ in read_tape()
2087 STbp->buffer_bytes -= STp->buffer->cmdstat.residual; in read_tape()
2090 if (STps->drv_block >= 0) { in read_tape()
2091 if (STp->block_size == 0) in read_tape()
2092 STps->drv_block++; in read_tape()
2094 STps->drv_block += STbp->buffer_bytes / STp->block_size; in read_tape()
2109 struct scsi_tape *STp = filp->private_data; in st_read()
2112 struct st_buffer *STbp = STp->buffer; in st_read()
2114 if (mutex_lock_interruptible(&STp->lock)) in st_read()
2115 return -ERESTARTSYS; in st_read()
2121 STm = &(STp->modes[STp->current_mode]); in st_read()
2122 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_read()
2123 if (!STm->do_read_ahead) { in st_read()
2124 retval = (-EINVAL); /* Read must be integral number of blocks */ in st_read()
2127 STp->try_dio_now = 0; /* Direct i/o can't handle split blocks */ in st_read()
2130 STps = &(STp->ps[STp->partition]); in st_read()
2131 if (STps->rw == ST_WRITING) { in st_read()
2135 STps->rw = ST_READING; in st_read()
2138 if (debugging && STps->eof != ST_NOEOF) in st_read()
2141 STps->eof, STbp->buffer_bytes); in st_read()
2147 do_dio = STbp->do_dio; in st_read()
2149 if (STbp->buffer_bytes == 0 && in st_read()
2150 STps->eof >= ST_EOD_1) { in st_read()
2151 if (STps->eof < ST_EOD) { in st_read()
2152 STps->eof += 1; in st_read()
2156 retval = (-EIO); /* EOM or Blank Check */ in st_read()
2165 copy_from_user(&i, buf + count - 1, 1) != 0 || in st_read()
2166 copy_to_user(buf + count - 1, &i, 1) != 0) { in st_read()
2167 retval = (-EFAULT); in st_read()
2172 STps->rw = ST_READING; in st_read()
2179 if (STbp->buffer_bytes == 0) { in st_read()
2180 special = read_tape(STp, count - total, &SRpnt); in st_read()
2188 if (STbp->buffer_bytes > 0) { in st_read()
2190 if (debugging && STps->eof != ST_NOEOF) in st_read()
2193 STps->eof, STbp->buffer_bytes, in st_read()
2194 (int)(count - total)); in st_read()
2196 transfer = STbp->buffer_bytes < count - total ? in st_read()
2197 STbp->buffer_bytes : count - total; in st_read()
2209 if (STp->block_size == 0) in st_read()
2217 if (STps->eof == ST_FM_HIT) { in st_read()
2218 STps->eof = ST_FM; in st_read()
2219 STps->drv_block = 0; in st_read()
2220 if (STps->drv_file >= 0) in st_read()
2221 STps->drv_file++; in st_read()
2222 } else if (STps->eof == ST_EOD_1) { in st_read()
2223 STps->eof = ST_EOD_2; in st_read()
2224 STps->drv_block = 0; in st_read()
2225 if (STps->drv_file >= 0) in st_read()
2226 STps->drv_file++; in st_read()
2227 } else if (STps->eof == ST_EOD_2) in st_read()
2228 STps->eof = ST_EOD; in st_read()
2229 } else if (STps->eof == ST_FM) in st_read()
2230 STps->eof = ST_NOEOF; in st_read()
2240 STbp->buffer_bytes = 0; in st_read()
2242 mutex_unlock(&STp->lock); in st_read()
2257 STp->current_mode, STm->do_buffer_writes, in DEB()
2258 STm->do_async_writes, STm->do_read_ahead); in DEB()
2262 STp->can_bsr, STp->two_fm, STp->fast_mteom, in DEB()
2263 STp->do_auto_lock); in DEB()
2266 "partitions: %d, s2 log: %d\n", in DEB()
2267 STm->defaults_for_writes, STp->omit_blklims, in DEB()
2268 STp->can_partitions, STp->scsi2_logical); in DEB()
2272 STm->sysv, STp->immediate, STp->sili, in DEB()
2273 STp->immediate_filemark); in DEB()
2288 STm = &(STp->modes[STp->current_mode]);
2289 if (!STm->defined) {
2290 cd0 = STm->cdevs[0];
2291 cd1 = STm->cdevs[1];
2292 d0 = STm->devs[0];
2293 d1 = STm->devs[1];
2294 memcpy(STm, &(STp->modes[0]), sizeof(struct st_modedef));
2295 STm->cdevs[0] = cd0;
2296 STm->cdevs[1] = cd1;
2297 STm->devs[0] = d0;
2298 STm->devs[1] = d1;
2301 STp->current_mode);
2306 STm->do_buffer_writes = (options & MT_ST_BUFFER_WRITES) != 0;
2307 STm->do_async_writes = (options & MT_ST_ASYNC_WRITES) != 0;
2308 STm->defaults_for_writes = (options & MT_ST_DEF_WRITES) != 0;
2309 STm->do_read_ahead = (options & MT_ST_READ_AHEAD) != 0;
2310 STp->two_fm = (options & MT_ST_TWO_FM) != 0;
2311 STp->fast_mteom = (options & MT_ST_FAST_MTEOM) != 0;
2312 STp->do_auto_lock = (options & MT_ST_AUTO_LOCK) != 0;
2313 STp->can_bsr = (options & MT_ST_CAN_BSR) != 0;
2314 STp->omit_blklims = (options & MT_ST_NO_BLKLIMS) != 0;
2315 if ((STp->device)->scsi_level >= SCSI_2)
2316 STp->can_partitions = (options & MT_ST_CAN_PARTITIONS) != 0;
2317 STp->scsi2_logical = (options & MT_ST_SCSI2LOGICAL) != 0;
2318 STp->immediate = (options & MT_ST_NOWAIT) != 0;
2319 STp->immediate_filemark = (options & MT_ST_NOWAIT_EOF) != 0;
2320 STm->sysv = (options & MT_ST_SYSV) != 0;
2321 STp->sili = (options & MT_ST_SILI) != 0;
2327 STm->do_buffer_writes = value;
2329 STm->do_async_writes = value;
2331 STm->defaults_for_writes = value;
2333 STm->do_read_ahead = value;
2335 STp->two_fm = value;
2337 STp->fast_mteom = value;
2339 STp->do_auto_lock = value;
2341 STp->can_bsr = value;
2343 STp->omit_blklims = value;
2344 if ((STp->device)->scsi_level >= SCSI_2 &&
2346 STp->can_partitions = value;
2348 STp->scsi2_logical = value;
2350 STp->immediate = value;
2352 STp->immediate_filemark = value;
2354 STm->sysv = value;
2356 STp->sili = value;
2366 STm->default_blksize = (-1);
2369 STm->default_blksize = value;
2371 "%d bytes.\n", STm->default_blksize);
2372 if (STp->ready == ST_READY) {
2373 STp->blksize_changed = 0;
2380 STp->long_timeout = (value & ~MT_ST_SET_LONG_TIMEOUT) * HZ;
2384 blk_queue_rq_timeout(STp->device->request_queue,
2394 return (-EINVAL);
2395 STp->cln_mode = value;
2396 STp->cln_sense_mask = (options >> 8) & 0xff;
2397 STp->cln_sense_value = (options >> 16) & 0xff;
2400 value, STp->cln_sense_mask, STp->cln_sense_value);
2406 STm->default_density = (-1);
2410 STm->default_density = value & 0xff;
2412 STm->default_density);
2413 if (STp->ready == ST_READY) {
2414 STp->density_changed = 0;
2420 STp->default_drvbuffer = 0xff;
2424 STp->default_drvbuffer = value & 7;
2427 STp->default_drvbuffer);
2428 if (STp->ready == ST_READY)
2429 st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer);
2433 STm->default_compression = ST_DONT_TOUCH;
2438 STp->c_algo = (value & 0xff00) >> 8;
2441 STp->c_algo);
2444 STm->default_compression = (value & 1 ? ST_YES : ST_NO);
2448 if (STp->ready == ST_READY) {
2449 STp->compression_changed = 0;
2450 st_compression(STp, (STm->default_compression == ST_YES));
2456 return (-EIO);
2496 STp->device->request_queue->rq_timeout, 0, 1); in read_mode_page()
2498 return (STp->buffer)->syscall_result; in read_mode_page()
2502 return STp->buffer->syscall_result; in read_mode_page()
2507 in the buffer is correctly formatted. The long timeout is used if slow is non-zero. */
2518 pgo = MODE_HEADER_LENGTH + (STp->buffer)->b_data[MH_OFF_BDESCS_LENGTH]; in write_mode_page()
2519 cmd[4] = pgo + (STp->buffer)->b_data[pgo + MP_OFF_PAGE_LENGTH] + 2; in write_mode_page()
2522 (STp->buffer)->b_data[MH_OFF_DATA_LENGTH] = 0; in write_mode_page()
2523 (STp->buffer)->b_data[MH_OFF_MEDIUM_TYPE] = 0; in write_mode_page()
2524 (STp->buffer)->b_data[MH_OFF_DEV_SPECIFIC] &= ~MH_BIT_WP; in write_mode_page()
2525 (STp->buffer)->b_data[pgo + MP_OFF_PAGE_NBR] &= MP_MSK_PAGE_NBR; in write_mode_page()
2528 STp->long_timeout : STp->device->request_queue->rq_timeout; in write_mode_page()
2532 return (STp->buffer)->syscall_result; in write_mode_page()
2536 return STp->buffer->syscall_result; in write_mode_page()
2553 The block descriptors are read and written because Sony SDT-7000 does not
2561 unsigned char *b_data = (STp->buffer)->b_data; in st_compression()
2563 if (STp->ready != ST_READY) in st_compression()
2564 return (-EIO); in st_compression()
2570 return (-EIO); in st_compression()
2580 return (-EIO); in st_compression()
2586 if (STp->c_algo != 0) in st_compression()
2587 b_data[mpoffs + CP_OFF_C_ALGO] = STp->c_algo; in st_compression()
2591 if (STp->c_algo != 0) in st_compression()
2598 return (-EIO); in st_compression()
2602 STp->compression_changed = 1; in st_compression()
2610 int retval = (-EIO), timeout; in do_load_unload()
2615 if (STp->ready != ST_READY && !load_code) { in do_load_unload()
2616 if (STp->ready == ST_NO_TAPE) in do_load_unload()
2617 return (-ENOMEDIUM); in do_load_unload()
2619 return (-EIO); in do_load_unload()
2633 load_code - MT_ST_HPLOADER_OFFSET); in do_load_unload()
2634 cmd[3] = load_code - MT_ST_HPLOADER_OFFSET; /* MediaID field of C1553A */ in do_load_unload()
2636 if (STp->immediate) { in do_load_unload()
2638 timeout = STp->device->request_queue->rq_timeout; in do_load_unload()
2641 timeout = STp->long_timeout; in do_load_unload()
2653 return (STp->buffer)->syscall_result; in do_load_unload()
2655 retval = (STp->buffer)->syscall_result; in do_load_unload()
2661 STp->rew_at_close = 0; in do_load_unload()
2662 STp->ready = ST_NO_TAPE; in do_load_unload()
2665 STp->rew_at_close = STp->autorew_dev; in do_load_unload()
2672 STps = &(STp->ps[STp->partition]); in do_load_unload()
2673 STps->drv_file = STps->drv_block = (-1); in do_load_unload()
2684 s32 sc; in deb_space_print() local
2689 sc = sign_extend32(get_unaligned_be24(&cmd[2]), 23); in deb_space_print()
2691 sc = -sc; in deb_space_print()
2693 direction ? "backward" : "forward", sc, units); in deb_space_print()
2715 WARN_ON(STp->buffer->do_dio != 0); in st_int_ioctl()
2716 if (STp->ready != ST_READY) { in st_int_ioctl()
2717 if (STp->ready == ST_NO_TAPE) in st_int_ioctl()
2718 return (-ENOMEDIUM); in st_int_ioctl()
2720 return (-EIO); in st_int_ioctl()
2722 timeout = STp->long_timeout; in st_int_ioctl()
2723 STps = &(STp->ps[STp->partition]); in st_int_ioctl()
2724 fileno = STps->drv_file; in st_int_ioctl()
2725 blkno = STps->drv_block; in st_int_ioctl()
2726 at_sm = STps->at_sm; in st_int_ioctl()
2751 ltmp = (-arg); in st_int_ioctl()
2757 fileno -= arg; in st_int_ioctl()
2758 blkno = (-1); /* We can't know the block number */ in st_int_ioctl()
2775 ltmp = (-arg); in st_int_ioctl()
2781 blkno -= arg; in st_int_ioctl()
2792 blkno = fileno = (-1); in st_int_ioctl()
2799 ltmp = (-arg); in st_int_ioctl()
2805 blkno = fileno = (-1); in st_int_ioctl()
2812 if (STp->write_prot) in st_int_ioctl()
2813 return (-EACCES); in st_int_ioctl()
2818 (cmd_in == MTWEOF && STp->immediate_filemark)) in st_int_ioctl()
2823 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2845 if (STp->immediate) { in st_int_ioctl()
2847 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2857 if (STp->immediate) { in st_int_ioctl()
2859 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2866 if (!STp->fast_mteom) { in st_int_ioctl()
2869 fileno = STps->drv_file; in st_int_ioctl()
2870 if (STps->eof >= ST_EOD_1) in st_int_ioctl()
2877 fileno = (-1); in st_int_ioctl()
2881 blkno = -1; in st_int_ioctl()
2885 if (STp->write_prot) in st_int_ioctl()
2886 return (-EACCES); in st_int_ioctl()
2888 cmd[1] = (arg ? 1 : 0); /* Long erase with non-zero argument */ in st_int_ioctl()
2889 if (STp->immediate) { in st_int_ioctl()
2891 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2894 timeout = STp->long_timeout * 8; in st_int_ioctl()
2903 if (STp->dirty || (STp->buffer)->buffer_bytes != 0) in st_int_ioctl()
2904 return (-EIO); /* Not allowed if data in buffer */ in st_int_ioctl()
2907 STp->max_block > 0 && in st_int_ioctl()
2908 ((arg & MT_ST_BLKSIZE_MASK) < STp->min_block || in st_int_ioctl()
2909 (arg & MT_ST_BLKSIZE_MASK) > STp->max_block)) { in st_int_ioctl()
2911 return (-EINVAL); in st_int_ioctl()
2914 if ((STp->use_pf & USE_PF)) in st_int_ioctl()
2919 memset((STp->buffer)->b_data, 0, 12); in st_int_ioctl()
2921 (STp->buffer)->b_data[2] = (arg & 7) << 4; in st_int_ioctl()
2923 (STp->buffer)->b_data[2] = in st_int_ioctl()
2924 STp->drv_buffer << 4; in st_int_ioctl()
2925 (STp->buffer)->b_data[3] = 8; /* block descriptor length */ in st_int_ioctl()
2927 (STp->buffer)->b_data[4] = arg; in st_int_ioctl()
2928 STp->density_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2929 STp->changed_density = arg; in st_int_ioctl()
2931 (STp->buffer)->b_data[4] = arg >> 24; in st_int_ioctl()
2933 (STp->buffer)->b_data[4] = STp->density; in st_int_ioctl()
2937 STp->blksize_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2938 STp->changed_blksize = arg; in st_int_ioctl()
2941 ltmp = STp->block_size; in st_int_ioctl()
2942 (STp->buffer)->b_data[9] = (ltmp >> 16); in st_int_ioctl()
2943 (STp->buffer)->b_data[10] = (ltmp >> 8); in st_int_ioctl()
2944 (STp->buffer)->b_data[11] = ltmp; in st_int_ioctl()
2945 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2950 (STp->buffer)->b_data[9] * 65536 + in st_int_ioctl()
2951 (STp->buffer)->b_data[10] * 256 + in st_int_ioctl()
2952 (STp->buffer)->b_data[11]); in st_int_ioctl()
2956 (STp->buffer)->b_data[4]); in st_int_ioctl()
2960 ((STp->buffer)->b_data[2] >> 4) & 7); in st_int_ioctl()
2964 return (-ENOSYS); in st_int_ioctl()
2970 return (STp->buffer)->syscall_result; in st_int_ioctl()
2972 ioctl_result = (STp->buffer)->syscall_result; in st_int_ioctl()
2977 STps->drv_block = blkno; in st_int_ioctl()
2978 STps->drv_file = fileno; in st_int_ioctl()
2979 STps->at_sm = at_sm; in st_int_ioctl()
2987 STp->block_size = arg & MT_ST_BLKSIZE_MASK; in st_int_ioctl()
2988 if (STp->block_size != 0) { in st_int_ioctl()
2989 (STp->buffer)->buffer_blocks = in st_int_ioctl()
2990 (STp->buffer)->buffer_size / STp->block_size; in st_int_ioctl()
2992 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in st_int_ioctl()
2994 STp->density = arg >> MT_ST_DENSITY_SHIFT; in st_int_ioctl()
2996 STp->drv_buffer = (arg & 7); in st_int_ioctl()
2998 STp->density = arg; in st_int_ioctl()
3001 STps->eof = ST_EOD; in st_int_ioctl()
3003 STps->eof = ST_FM; in st_int_ioctl()
3005 STps->eof = ST_NOEOF; in st_int_ioctl()
3008 STps->rw = ST_IDLE; /* prevent automatic WEOF at close */ in st_int_ioctl()
3011 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_int_ioctl()
3013 if (cmdstatp->flags & SENSE_EOM) { in st_int_ioctl()
3016 STps->eof = ST_EOM_OK; in st_int_ioctl()
3017 STps->drv_block = 0; in st_int_ioctl()
3020 if (cmdstatp->remainder_valid) in st_int_ioctl()
3021 undone = (int)cmdstatp->uremainder64; in st_int_ioctl()
3026 cmdstatp->have_sense && in st_int_ioctl()
3027 (cmdstatp->flags & SENSE_EOM)) { in st_int_ioctl()
3028 if (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_int_ioctl()
3029 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) { in st_int_ioctl()
3031 STps->eof = ST_NOEOF; in st_int_ioctl()
3034 fileno -= undone; in st_int_ioctl()
3036 STps->eof = ST_NOEOF; in st_int_ioctl()
3038 STps->drv_file = fileno; in st_int_ioctl()
3041 STps->drv_file = fileno - undone; in st_int_ioctl()
3043 STps->drv_file = fileno; in st_int_ioctl()
3044 STps->drv_block = -1; in st_int_ioctl()
3045 STps->eof = ST_NOEOF; in st_int_ioctl()
3048 undone = (-undone); in st_int_ioctl()
3049 if (STps->drv_file >= 0) in st_int_ioctl()
3050 STps->drv_file = fileno + undone; in st_int_ioctl()
3051 STps->drv_block = 0; in st_int_ioctl()
3052 STps->eof = ST_NOEOF; in st_int_ioctl()
3054 if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */ in st_int_ioctl()
3055 if (STps->drv_file >= 0) in st_int_ioctl()
3056 STps->drv_file++; in st_int_ioctl()
3057 STps->drv_block = 0; in st_int_ioctl()
3058 STps->eof = ST_FM; in st_int_ioctl()
3061 STps->drv_block = blkno - undone; in st_int_ioctl()
3063 STps->drv_block = (-1); in st_int_ioctl()
3064 STps->eof = ST_NOEOF; in st_int_ioctl()
3067 if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */ in st_int_ioctl()
3068 STps->drv_file--; in st_int_ioctl()
3069 STps->drv_block = (-1); in st_int_ioctl()
3072 undone = (-undone); in st_int_ioctl()
3073 if (STps->drv_block >= 0) in st_int_ioctl()
3074 STps->drv_block = blkno + undone; in st_int_ioctl()
3076 STps->eof = ST_NOEOF; in st_int_ioctl()
3078 STps->drv_file = (-1); in st_int_ioctl()
3079 STps->drv_block = (-1); in st_int_ioctl()
3080 STps->eof = ST_EOD; in st_int_ioctl()
3085 if (cmdstatp->sense_hdr.sense_key == ILLEGAL_REQUEST && in st_int_ioctl()
3086 cmdstatp->sense_hdr.asc == 0x24 && in st_int_ioctl()
3087 (STp->device)->scsi_level <= SCSI_2 && in st_int_ioctl()
3088 !(STp->use_pf & PF_TESTED)) { in st_int_ioctl()
3091 STp->use_pf = (STp->use_pf ^ USE_PF) | PF_TESTED; in st_int_ioctl()
3097 STps->eof = ST_NOEOF; in st_int_ioctl()
3099 if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK) in st_int_ioctl()
3100 STps->eof = ST_EOD; in st_int_ioctl()
3120 if (STp->ready != ST_READY) in get_location()
3121 return (-EIO); in get_location()
3124 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3129 if (!logical && !STp->scsi2_logical) in get_location()
3133 STp->device->request_queue->rq_timeout, in get_location()
3136 return (STp->buffer)->syscall_result; in get_location()
3138 if ((STp->buffer)->syscall_result != 0 || in get_location()
3139 (STp->device->scsi_level >= SCSI_2 && in get_location()
3140 ((STp->buffer)->b_data[0] & 4) != 0)) { in get_location()
3143 result = (-EIO); in get_location()
3146 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3147 *block = ((STp->buffer)->b_data[0] << 16) in get_location()
3148 + ((STp->buffer)->b_data[1] << 8) in get_location()
3149 + (STp->buffer)->b_data[2]; in get_location()
3152 *block = ((STp->buffer)->b_data[4] << 24) in get_location()
3153 + ((STp->buffer)->b_data[5] << 16) in get_location()
3154 + ((STp->buffer)->b_data[6] << 8) in get_location()
3155 + (STp->buffer)->b_data[7]; in get_location()
3156 *partition = (STp->buffer)->b_data[1]; in get_location()
3157 if (((STp->buffer)->b_data[0] & 0x80) && in get_location()
3158 (STp->buffer)->b_data[1] == 0) /* BOP of partition 0 */ in get_location()
3159 STp->ps[0].drv_block = STp->ps[0].drv_file = 0; in get_location()
3183 if (STp->ready != ST_READY) in set_location()
3184 return (-EIO); in set_location()
3185 timeout = STp->long_timeout; in set_location()
3186 STps = &(STp->ps[STp->partition]); in set_location()
3191 return (-EIO); ) in set_location()
3194 if ((!STp->can_partitions && partition != 0) || in set_location()
3196 return (-EINVAL); in set_location()
3197 if (partition != STp->partition) { in set_location()
3199 STps->last_block_valid = 0; in set_location()
3201 STps->last_block_valid = 1; in set_location()
3202 STps->last_block_visited = blk; in set_location()
3205 blk, STp->partition); in set_location()
3210 if ((STp->device)->scsi_level < SCSI_2) { in set_location()
3222 if (!logical && !STp->scsi2_logical) in set_location()
3224 if (STp->partition != partition) { in set_location()
3228 "from %d to %d\n", STp->partition, in set_location()
3232 if (STp->immediate) { in set_location()
3234 timeout = STp->device->request_queue->rq_timeout; in set_location()
3240 return (STp->buffer)->syscall_result; in set_location()
3242 STps->drv_block = STps->drv_file = (-1); in set_location()
3243 STps->eof = ST_NOEOF; in set_location()
3244 if ((STp->buffer)->syscall_result != 0) { in set_location()
3245 result = (-EIO); in set_location()
3246 if (STp->can_partitions && in set_location()
3247 (STp->device)->scsi_level >= SCSI_2 && in set_location()
3249 STp->partition = p; in set_location()
3251 if (STp->can_partitions) { in set_location()
3252 STp->partition = partition; in set_location()
3253 STps = &(STp->ps[partition]); in set_location()
3254 if (!STps->last_block_valid || in set_location()
3255 STps->last_block_visited != block) { in set_location()
3256 STps->at_sm = 0; in set_location()
3257 STps->rw = ST_IDLE; in set_location()
3260 STps->at_sm = 0; in set_location()
3262 STps->drv_block = STps->drv_file = 0; in set_location()
3283 return (-EIO); in find_partition()
3293 if (STp->partition == STp->new_partition) in switch_partition()
3295 STps = &(STp->ps[STp->new_partition]); in switch_partition()
3296 if (!STps->last_block_valid) in switch_partition()
3297 STps->last_block_visited = 0; in switch_partition()
3298 return set_location(STp, STps->last_block_visited, STp->new_partition, 1); in switch_partition()
3318 /* Get the number of partitions on the tape. As a side effect reads the
3324 if (STp->ready != ST_READY) in nbr_partitions()
3325 return (-EIO); in nbr_partitions()
3331 result = (-EIO); in nbr_partitions()
3333 result = (STp->buffer)->b_data[MODE_HEADER_LENGTH + in nbr_partitions()
3335 DEBC_printk(STp, "Number of partitions %d.\n", result); in nbr_partitions()
3345 int timeout = STp->long_timeout; in format_medium()
3352 if (STp->immediate) { in format_medium()
3354 timeout = STp->device->request_queue->rq_timeout; in format_medium()
3360 result = STp->buffer->syscall_result; in format_medium()
3365 /* Partition the tape into two partitions if size > 0 or one partition if
3368 The block descriptors are read and written because Sony SDT-7000 does not
3373 Michael Schaefer's Sony SDT-7000 returns two descriptors and the second is
3374 used to set the size of partition 1 (this is what the SCSI-3 standard specifies).
3376 partition size fields is greater than the maximum number of additional partitions
3379 For Seagate DDS drives the page length must be 8 when no partitions is defined
3384 For drives that advertize SCSI-3 or newer, use the SSC-3 methods.
3390 bool scsi3 = STp->device->scsi_level >= SCSI_3, needs_format = false; in partition_tape()
3403 size = -size; in partition_tape()
3407 bp = (STp->buffer)->b_data; in partition_tape()
3412 psd_cnt = (bp[pgo + MP_OFF_PAGE_LENGTH] + 2 - PART_PAGE_FIXED_LENGTH) / 2; in partition_tape()
3427 /* Use units scaling for large partitions if the device in partition_tape()
3447 result = -EINVAL; in partition_tape()
3481 "Formatting tape with two partitions (%i = %d MB).\n", in partition_tape()
3502 result = (-EIO); in partition_tape()
3519 struct scsi_tape *STp = file->private_data; in st_ioctl()
3523 if (mutex_lock_interruptible(&STp->lock)) in st_ioctl()
3524 return -ERESTARTSYS; in st_ioctl()
3527 if (debugging && !STp->in_use) { in st_ioctl()
3529 retval = (-EIO); in st_ioctl()
3533 STm = &(STp->modes[STp->current_mode]); in st_ioctl()
3534 STps = &(STp->ps[STp->partition]); in st_ioctl()
3542 retval = scsi_ioctl_block_when_processing_errors(STp->device, cmd_in, in st_ioctl()
3543 file->f_flags & O_NDELAY); in st_ioctl()
3554 retval = (-EINVAL); in st_ioctl()
3560 retval = (-EFAULT); in st_ioctl()
3567 retval = (-EPERM); in st_ioctl()
3570 if (!STm->defined && in st_ioctl()
3573 retval = (-ENXIO); in st_ioctl()
3577 if (!STp->pos_unknown) { in st_ioctl()
3579 if (STps->eof == ST_FM_HIT) { in st_ioctl()
3582 mtc.mt_count -= 1; in st_ioctl()
3583 if (STps->drv_file >= 0) in st_ioctl()
3584 STps->drv_file += 1; in st_ioctl()
3587 if (STps->drv_file >= 0) in st_ioctl()
3588 STps->drv_file += 1; in st_ioctl()
3595 i = !STp->can_partitions || in st_ioctl()
3596 (STp->new_partition != STp->partition); in st_ioctl()
3610 if (STps->rw == ST_WRITING && in st_ioctl()
3621 STps->rw = ST_IDLE; in st_ioctl()
3637 retval = (-EIO); in st_ioctl()
3642 STp->device->was_reset = 0; in st_ioctl()
3647 if (STp->can_partitions) { in st_ioctl()
3648 /* STp->new_partition contains the in st_ioctl()
3651 STp->partition = 0; in st_ioctl()
3654 if (STp->density_changed) in st_ioctl()
3655 st_int_ioctl(STp, MTSETDENSITY, STp->changed_density); in st_ioctl()
3656 if (STp->blksize_changed) in st_ioctl()
3657 st_int_ioctl(STp, MTSETBLK, STp->changed_blksize); in st_ioctl()
3664 STps->rw = ST_IDLE; /* Prevent automatic WEOF and fsf */ in st_ioctl()
3666 if (mtc.mt_op == MTOFFL && STp->door_locked != ST_UNLOCKED) in st_ioctl()
3676 if (!STp->can_partitions || in st_ioctl()
3678 retval = (-EINVAL); in st_ioctl()
3681 if (mtc.mt_count >= STp->nbr_partitions && in st_ioctl()
3682 (STp->nbr_partitions = nbr_partitions(STp)) < 0) { in st_ioctl()
3683 retval = (-EIO); in st_ioctl()
3686 if (mtc.mt_count >= STp->nbr_partitions) { in st_ioctl()
3687 retval = (-EINVAL); in st_ioctl()
3690 STp->new_partition = mtc.mt_count; in st_ioctl()
3696 if (!STp->can_partitions) { in st_ioctl()
3697 retval = (-EINVAL); in st_ioctl()
3711 STp->ps[i].rw = ST_IDLE; in st_ioctl()
3712 STp->ps[i].at_sm = 0; in st_ioctl()
3713 STp->ps[i].last_block_valid = 0; in st_ioctl()
3715 STp->partition = STp->new_partition = 0; in st_ioctl()
3716 STp->nbr_partitions = mtc.mt_count != 0 ? 2 : 1; in st_ioctl()
3717 STps->drv_block = STps->drv_file = 0; in st_ioctl()
3723 i = set_location(STp, mtc.mt_count, STp->new_partition, 0); in st_ioctl()
3724 if (!STp->can_partitions) in st_ioctl()
3725 STp->ps[0].rw = ST_IDLE; in st_ioctl()
3745 if (STp->can_partitions && STp->ready == ST_READY && in st_ioctl()
3757 if (!STm->defined) { in st_ioctl()
3758 retval = (-ENXIO); in st_ioctl()
3765 if (cmd_mtiocget && STp->pos_unknown) { in st_ioctl()
3766 /* flush fails -> modify status accordingly */ in st_ioctl()
3768 STp->pos_unknown = 1; in st_ioctl()
3774 if (STp->can_partitions) { in st_ioctl()
3787 retval = (-EINVAL); in st_ioctl()
3791 mt_status.mt_type = STp->tape_type; in st_ioctl()
3793 ((STp->block_size << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK) | in st_ioctl()
3794 ((STp->density << MT_ST_DENSITY_SHIFT) & MT_ST_DENSITY_MASK); in st_ioctl()
3795 mt_status.mt_blkno = STps->drv_block; in st_ioctl()
3796 mt_status.mt_fileno = STps->drv_file; in st_ioctl()
3797 if (STp->block_size != 0 && mt_status.mt_blkno >= 0) { in st_ioctl()
3798 if (STps->rw == ST_WRITING) in st_ioctl()
3800 (STp->buffer)->buffer_bytes / STp->block_size; in st_ioctl()
3801 else if (STps->rw == ST_READING) in st_ioctl()
3802 mt_status.mt_blkno -= in st_ioctl()
3803 ((STp->buffer)->buffer_bytes + in st_ioctl()
3804 STp->block_size - 1) / STp->block_size; in st_ioctl()
3808 if (STp->drv_write_prot) in st_ioctl()
3816 mt_status.mt_erreg = (STp->recover_reg << MT_ST_SOFTERR_SHIFT); in st_ioctl()
3817 mt_status.mt_resid = STp->partition; in st_ioctl()
3818 if (STps->eof == ST_EOM_OK || STps->eof == ST_EOM_ERROR) in st_ioctl()
3820 else if (STps->eof >= ST_EOM_OK) in st_ioctl()
3822 if (STp->density == 1) in st_ioctl()
3824 else if (STp->density == 2) in st_ioctl()
3826 else if (STp->density == 3) in st_ioctl()
3828 if (STp->ready == ST_READY) in st_ioctl()
3830 if (STp->ready == ST_NO_TAPE) in st_ioctl()
3832 if (STps->at_sm) in st_ioctl()
3834 if (STm->do_async_writes || in st_ioctl()
3835 (STm->do_buffer_writes && STp->block_size != 0) || in st_ioctl()
3836 STp->drv_buffer != 0) in st_ioctl()
3838 if (STp->cleaning_req) in st_ioctl()
3845 STp->recover_reg = 0; /* Clear after read */ in st_ioctl()
3851 retval = (-EINVAL); in st_ioctl()
3862 mutex_unlock(&STp->lock); in st_ioctl()
3869 return -EPERM; in st_ioctl()
3875 retval = scsi_ioctl(STp->device, file->f_mode & FMODE_WRITE, cmd_in, p); in st_ioctl()
3878 STp->rew_at_close = 0; in st_ioctl()
3879 STp->ready = ST_NO_TAPE; in st_ioctl()
3884 mutex_unlock(&STp->lock); in st_ioctl()
3918 tb->frp_segs = 0; in new_tape_buffer()
3919 tb->use_sg = max_sg; in new_tape_buffer()
3920 tb->buffer_size = 0; in new_tape_buffer()
3922 tb->reserved_pages = kcalloc(max_sg, sizeof(struct page *), in new_tape_buffer()
3924 if (!tb->reserved_pages) { in new_tape_buffer()
3941 if (new_size <= STbuffer->buffer_size) in enlarge_buffer()
3944 if (STbuffer->buffer_size <= PAGE_SIZE) in enlarge_buffer()
3947 max_segs = STbuffer->use_sg; in enlarge_buffer()
3951 if (STbuffer->cleared) in enlarge_buffer()
3954 if (STbuffer->frp_segs) { in enlarge_buffer()
3955 order = STbuffer->reserved_page_order; in enlarge_buffer()
3963 STbuffer->reserved_page_order = order; in enlarge_buffer()
3972 for (segs = STbuffer->frp_segs, got = STbuffer->buffer_size; in enlarge_buffer()
3978 DEB(STbuffer->buffer_size = got); in enlarge_buffer()
3983 STbuffer->frp_segs += 1; in enlarge_buffer()
3985 STbuffer->buffer_size = got; in enlarge_buffer()
3986 STbuffer->reserved_pages[segs] = page; in enlarge_buffer()
3989 STbuffer->b_data = page_address(STbuffer->reserved_pages[0]); in enlarge_buffer()
4000 for (i=0; i < st_bp->frp_segs; i++) in clear_buffer()
4001 memset(page_address(st_bp->reserved_pages[i]), 0, in clear_buffer()
4002 PAGE_SIZE << st_bp->reserved_page_order); in clear_buffer()
4003 st_bp->cleared = 1; in clear_buffer()
4010 int i, order = STbuffer->reserved_page_order; in normalize_buffer()
4012 for (i = 0; i < STbuffer->frp_segs; i++) { in normalize_buffer()
4013 __free_pages(STbuffer->reserved_pages[i], order); in normalize_buffer()
4014 STbuffer->buffer_size -= (PAGE_SIZE << order); in normalize_buffer()
4016 STbuffer->frp_segs = 0; in normalize_buffer()
4017 STbuffer->sg_segs = 0; in normalize_buffer()
4018 STbuffer->reserved_page_order = 0; in normalize_buffer()
4019 STbuffer->map_data.offset = 0; in normalize_buffer()
4028 int length = PAGE_SIZE << st_bp->reserved_page_order; in append_to_buffer()
4030 for (i = 0, offset = st_bp->buffer_bytes; in append_to_buffer()
4031 i < st_bp->frp_segs && offset >= length; i++) in append_to_buffer()
4032 offset -= length; in append_to_buffer()
4033 if (i == st_bp->frp_segs) { /* Should never happen */ in append_to_buffer()
4035 return (-EIO); in append_to_buffer()
4037 for (; i < st_bp->frp_segs && do_count > 0; i++) { in append_to_buffer()
4038 struct page *page = st_bp->reserved_pages[i]; in append_to_buffer()
4039 cnt = length - offset < do_count ? length - offset : do_count; in append_to_buffer()
4042 return (-EFAULT); in append_to_buffer()
4043 do_count -= cnt; in append_to_buffer()
4044 st_bp->buffer_bytes += cnt; in append_to_buffer()
4049 return (-EIO); in append_to_buffer()
4060 int length = PAGE_SIZE << st_bp->reserved_page_order; in from_buffer()
4062 for (i = 0, offset = st_bp->read_pointer; in from_buffer()
4063 i < st_bp->frp_segs && offset >= length; i++) in from_buffer()
4064 offset -= length; in from_buffer()
4065 if (i == st_bp->frp_segs) { /* Should never happen */ in from_buffer()
4067 return (-EIO); in from_buffer()
4069 for (; i < st_bp->frp_segs && do_count > 0; i++) { in from_buffer()
4070 struct page *page = st_bp->reserved_pages[i]; in from_buffer()
4071 cnt = length - offset < do_count ? length - offset : do_count; in from_buffer()
4074 return (-EFAULT); in from_buffer()
4075 do_count -= cnt; in from_buffer()
4076 st_bp->buffer_bytes -= cnt; in from_buffer()
4077 st_bp->read_pointer += cnt; in from_buffer()
4082 return (-EIO); in from_buffer()
4093 int length = PAGE_SIZE << st_bp->reserved_page_order; in move_buffer_data()
4098 total=st_bp->buffer_bytes - offset; in move_buffer_data()
4099 for (src_seg=0; src_seg < st_bp->frp_segs; src_seg++) { in move_buffer_data()
4103 offset -= length; in move_buffer_data()
4106 st_bp->buffer_bytes = st_bp->read_pointer = total; in move_buffer_data()
4108 struct page *dpage = st_bp->reserved_pages[dst_seg]; in move_buffer_data()
4109 struct page *spage = st_bp->reserved_pages[src_seg]; in move_buffer_data()
4111 count = min(length - dst_offset, length - src_offset); in move_buffer_data()
4124 total -= count; in move_buffer_data()
4205 struct st_modedef *STm = &(tape->modes[mode]); in create_one_cdev()
4207 int dev_num = tape->index; in create_one_cdev()
4214 error = -ENOMEM; in create_one_cdev()
4217 cdev->owner = THIS_MODULE; in create_one_cdev()
4218 cdev->ops = &st_fops; in create_one_cdev()
4219 STm->cdevs[rew] = cdev; in create_one_cdev()
4223 pr_err("st%d: Can't add %s-rewind mode %d\n", dev_num, in create_one_cdev()
4229 i = mode << (4 - ST_NBR_MODE_BITS); in create_one_cdev()
4231 tape->name, st_formats[i]); in create_one_cdev()
4233 dev = device_create(&st_sysfs_class, &tape->device->sdev_gendev, in create_one_cdev()
4234 cdev_devno, &tape->modes[mode], "%s", name); in create_one_cdev()
4241 STm->devs[rew] = dev; in create_one_cdev()
4245 cdev_del(STm->cdevs[rew]); in create_one_cdev()
4247 STm->cdevs[rew] = NULL; in create_one_cdev()
4248 STm->devs[rew] = NULL; in create_one_cdev()
4264 return sysfs_create_link(&tape->device->sdev_gendev.kobj, in create_cdevs()
4265 &tape->modes[0].devs[0]->kobj, "tape"); in create_cdevs()
4271 sysfs_remove_link(&tape->device->sdev_gendev.kobj, "tape"); in remove_cdevs()
4273 struct st_modedef *STm = &(tape->modes[mode]); in remove_cdevs()
4275 if (STm->cdevs[rew]) in remove_cdevs()
4276 cdev_del(STm->cdevs[rew]); in remove_cdevs()
4277 if (STm->devs[rew]) in remove_cdevs()
4278 device_unregister(STm->devs[rew]); in remove_cdevs()
4292 if (SDp->type != TYPE_TAPE) in st_probe()
4293 return -ENODEV; in st_probe()
4298 "please mail to linux-scsi@vger.kernel.org.\n"); in st_probe()
4299 return -ENODEV; in st_probe()
4303 i = queue_max_segments(SDp->request_queue); in st_probe()
4320 kref_init(&tpnt->kref); in st_probe()
4322 tpnt->device = SDp; in st_probe()
4323 if (SDp->scsi_level <= 2) in st_probe()
4324 tpnt->tape_type = MT_ISSCSI1; in st_probe()
4326 tpnt->tape_type = MT_ISSCSI2; in st_probe()
4328 tpnt->buffer = buffer; in st_probe()
4329 tpnt->buffer->last_SRpnt = NULL; in st_probe()
4331 tpnt->inited = 0; in st_probe()
4332 tpnt->dirty = 0; in st_probe()
4333 tpnt->in_use = 0; in st_probe()
4334 tpnt->drv_buffer = 1; /* Try buffering if no mode sense */ in st_probe()
4335 tpnt->use_pf = (SDp->scsi_level >= SCSI_2); in st_probe()
4336 tpnt->density = 0; in st_probe()
4337 tpnt->do_auto_lock = ST_AUTO_LOCK; in st_probe()
4338 tpnt->can_bsr = (SDp->scsi_level > 2 ? 1 : ST_IN_FILE_POS); /* BSR mandatory in SCSI3 */ in st_probe()
4339 tpnt->can_partitions = 0; in st_probe()
4340 tpnt->two_fm = ST_TWO_FM; in st_probe()
4341 tpnt->fast_mteom = ST_FAST_MTEOM; in st_probe()
4342 tpnt->scsi2_logical = ST_SCSI2LOGICAL; in st_probe()
4343 tpnt->sili = ST_SILI; in st_probe()
4344 tpnt->immediate = ST_NOWAIT; in st_probe()
4345 tpnt->immediate_filemark = 0; in st_probe()
4346 tpnt->default_drvbuffer = 0xff; /* No forced buffering */ in st_probe()
4347 tpnt->partition = 0; in st_probe()
4348 tpnt->new_partition = 0; in st_probe()
4349 tpnt->nbr_partitions = 0; in st_probe()
4350 blk_queue_rq_timeout(tpnt->device->request_queue, ST_TIMEOUT); in st_probe()
4351 tpnt->long_timeout = ST_LONG_TIMEOUT; in st_probe()
4352 tpnt->try_dio = try_direct_io; in st_probe()
4353 tpnt->first_tur = 1; in st_probe()
4356 STm = &(tpnt->modes[i]); in st_probe()
4357 STm->defined = 0; in st_probe()
4358 STm->sysv = ST_SYSV; in st_probe()
4359 STm->defaults_for_writes = 0; in st_probe()
4360 STm->do_async_writes = ST_ASYNC_WRITES; in st_probe()
4361 STm->do_buffer_writes = ST_BUFFER_WRITES; in st_probe()
4362 STm->do_read_ahead = ST_READ_AHEAD; in st_probe()
4363 STm->default_compression = ST_DONT_TOUCH; in st_probe()
4364 STm->default_blksize = (-1); /* No forced size */ in st_probe()
4365 STm->default_density = (-1); /* No forced density */ in st_probe()
4366 STm->tape = tpnt; in st_probe()
4370 STps = &(tpnt->ps[i]); in st_probe()
4371 STps->rw = ST_IDLE; in st_probe()
4372 STps->eof = ST_NOEOF; in st_probe()
4373 STps->at_sm = 0; in st_probe()
4374 STps->last_block_valid = 0; in st_probe()
4375 STps->drv_block = (-1); in st_probe()
4376 STps->drv_file = (-1); in st_probe()
4379 tpnt->current_mode = 0; in st_probe()
4380 tpnt->modes[0].defined = 1; in st_probe()
4382 tpnt->density_changed = tpnt->compression_changed = in st_probe()
4383 tpnt->blksize_changed = 0; in st_probe()
4384 mutex_init(&tpnt->lock); in st_probe()
4395 tpnt->index = error; in st_probe()
4396 sprintf(tpnt->name, "st%d", tpnt->index); in st_probe()
4397 tpnt->stats = kzalloc(sizeof(struct scsi_tape_stats), GFP_KERNEL); in st_probe()
4398 if (tpnt->stats == NULL) { in st_probe()
4413 "Attached scsi tape %s\n", tpnt->name); in st_probe()
4415 tpnt->name, tpnt->try_dio ? "yes" : "no", in st_probe()
4416 queue_dma_alignment(SDp->request_queue) + 1); in st_probe()
4422 kfree(tpnt->stats); in st_probe()
4425 idr_remove(&st_index_idr, tpnt->index); in st_probe()
4433 return -ENODEV; in st_probe()
4440 int index = tpnt->index; in st_remove()
4446 kref_put(&tpnt->kref, scsi_tape_release); in st_remove()
4455 * scsi_tape_release - Called to free the Scsi_Tape structure
4467 tpnt->device = NULL; in scsi_tape_release()
4469 if (tpnt->buffer) { in scsi_tape_release()
4470 normalize_buffer(tpnt->buffer); in scsi_tape_release()
4471 kfree(tpnt->buffer->reserved_pages); in scsi_tape_release()
4472 kfree(tpnt->buffer); in scsi_tape_release()
4475 kfree(tpnt->stats); in scsi_tape_release()
4542 /* The sysfs driver interface. Read-only at the moment */
4573 * other values have -EINVAL returned if they are passed in. in debug_flag_store()
4584 return -EINVAL; in debug_flag_store()
4613 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->defined); in defined_show()
4625 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_blksize); in default_blksize_show()
4638 fmt = STm->default_density >= 0 ? "0x%02x\n" : "%d\n"; in default_density_show()
4639 l = snprintf(buf, PAGE_SIZE, fmt, STm->default_density); in default_density_show()
4651 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_compression - 1); in default_compression_show()
4660 struct scsi_tape *STp = STm->tape; in options_show()
4664 options = STm->do_buffer_writes ? MT_ST_BUFFER_WRITES : 0; in options_show()
4665 options |= STm->do_async_writes ? MT_ST_ASYNC_WRITES : 0; in options_show()
4666 options |= STm->do_read_ahead ? MT_ST_READ_AHEAD : 0; in options_show()
4668 options |= STp->two_fm ? MT_ST_TWO_FM : 0; in options_show()
4669 options |= STp->fast_mteom ? MT_ST_FAST_MTEOM : 0; in options_show()
4670 options |= STm->defaults_for_writes ? MT_ST_DEF_WRITES : 0; in options_show()
4671 options |= STp->can_bsr ? MT_ST_CAN_BSR : 0; in options_show()
4672 options |= STp->omit_blklims ? MT_ST_NO_BLKLIMS : 0; in options_show()
4673 options |= STp->can_partitions ? MT_ST_CAN_PARTITIONS : 0; in options_show()
4674 options |= STp->scsi2_logical ? MT_ST_SCSI2LOGICAL : 0; in options_show()
4675 options |= STm->sysv ? MT_ST_SYSV : 0; in options_show()
4676 options |= STp->immediate ? MT_ST_NOWAIT : 0; in options_show()
4677 options |= STp->immediate_filemark ? MT_ST_NOWAIT_EOF : 0; in options_show()
4678 options |= STp->sili ? MT_ST_SILI : 0; in options_show()
4688 * read_cnt_show - return read count - count of reads made from tape drive
4699 (long long)atomic64_read(&STm->tape->stats->read_cnt)); in read_cnt_show()
4704 * read_byte_cnt_show - return read byte count - tape drives
4717 (long long)atomic64_read(&STm->tape->stats->read_byte_cnt)); in read_byte_cnt_show()
4722 * read_ns_show - return read ns - overall time spent waiting on reads in ns.
4733 (long long)atomic64_read(&STm->tape->stats->tot_read_time)); in read_ns_show()
4738 * write_cnt_show - write count - number of user calls
4750 (long long)atomic64_read(&STm->tape->stats->write_cnt)); in write_cnt_show()
4755 * write_byte_cnt_show - write byte count - raw count of
4767 (long long)atomic64_read(&STm->tape->stats->write_byte_cnt)); in write_byte_cnt_show()
4772 * write_ns_show - write ns - number of nanoseconds waiting on write
4784 (long long)atomic64_read(&STm->tape->stats->tot_write_time)); in write_ns_show()
4789 * in_flight_show - number of I/Os currently in flight -
4802 (long long)atomic64_read(&STm->tape->stats->in_flight)); in in_flight_show()
4807 * io_ns_show - io wait ns - this is the number of ns spent
4822 (long long)atomic64_read(&STm->tape->stats->tot_io_time)); in io_ns_show()
4827 * other_cnt_show - other io count - this is the number of
4841 (long long)atomic64_read(&STm->tape->stats->other_cnt)); in other_cnt_show()
4846 * resid_cnt_show - A count of the number of times we get a residual
4847 * count - this should indicate someone issuing reads larger than the
4859 (long long)atomic64_read(&STm->tape->stats->resid_cnt)); in resid_cnt_show()
4906 unsigned long end = (uaddr + count + PAGE_SIZE - 1) >> PAGE_SHIFT; in sgl_map_user_pages()
4908 const int nr_pages = end - start; in sgl_map_user_pages()
4911 struct rq_map_data *mdata = &STbp->map_data; in sgl_map_user_pages()
4915 return -EINVAL; in sgl_map_user_pages()
4919 return -ENOMEM; in sgl_map_user_pages()
4927 return -ENOMEM; in sgl_map_user_pages()
4945 mdata->offset = uaddr & ~PAGE_MASK; in sgl_map_user_pages()
4946 STbp->mapped_pages = pages; in sgl_map_user_pages()
4964 unpin_user_pages_dirty_lock(STbp->mapped_pages, nr_pages, dirtied); in sgl_unmap_user_pages()
4966 kfree(STbp->mapped_pages); in sgl_unmap_user_pages()
4967 STbp->mapped_pages = NULL; in sgl_unmap_user_pages()