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()
956 STp->new_partition = STp->partition; in reset_state()
975 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in test_ready()
983 STp->long_timeout, MAX_READY_RETRIES, 1); in test_ready()
986 retval = (STp->buffer)->syscall_result; in test_ready()
990 if (cmdstatp->have_sense) { in test_ready()
992 scode = cmdstatp->sense_hdr.sense_key; in test_ready()
1001 retval = (-EIO); in test_ready()
1009 retval = (-EINTR); in test_ready()
1016 if ((STp->device)->scsi_level >= SCSI_2 && in test_ready()
1017 cmdstatp->sense_hdr.asc == 0x3a) /* Check ASC */ in test_ready()
1026 retval = (STp->buffer)->syscall_result; in test_ready()
1031 if (STp->first_tur) { in test_ready()
1033 STp->pos_unknown = 0; in test_ready()
1034 STp->first_tur = 0; in test_ready()
1052 unsigned short st_flags = filp->f_flags; in check_tape()
1059 STp->ready = ST_READY; in check_tape()
1061 if (mode != STp->current_mode) { in check_tape()
1063 STp->current_mode, mode); in check_tape()
1065 STp->current_mode = mode; in check_tape()
1067 STm = &(STp->modes[STp->current_mode]); in check_tape()
1069 saved_cleaning = STp->cleaning_req; in check_tape()
1070 STp->cleaning_req = 0; in check_tape()
1072 do_wait = ((filp->f_flags & O_NONBLOCK) == 0); in check_tape()
1079 STp->pos_unknown = 0; in check_tape()
1080 STp->partition = STp->new_partition = 0; in check_tape()
1081 if (STp->can_partitions) in check_tape()
1082 STp->nbr_partitions = 1; /* This guess will be updated later in check_tape()
1085 STps = &(STp->ps[i]); in check_tape()
1086 STps->rw = ST_IDLE; in check_tape()
1087 STps->eof = ST_NOEOF; in check_tape()
1088 STps->at_sm = 0; in check_tape()
1089 STps->last_block_valid = 0; in check_tape()
1090 STps->drv_block = 0; in check_tape()
1091 STps->drv_file = 0; in check_tape()
1096 STp->cleaning_req |= saved_cleaning; in check_tape()
1100 STp->ready = ST_NO_TAPE; in check_tape()
1102 STp->ready = ST_NOT_READY; in check_tape()
1104 STp->density = 0; /* Clear the erroneous "residue" */ in check_tape()
1105 STp->write_prot = 0; in check_tape()
1106 STp->block_size = 0; in check_tape()
1107 STp->ps[0].drv_file = STp->ps[0].drv_block = (-1); in check_tape()
1108 STp->partition = STp->new_partition = 0; in check_tape()
1109 STp->door_locked = ST_UNLOCKED; in check_tape()
1114 if (STp->omit_blklims) in check_tape()
1115 STp->min_block = STp->max_block = (-1); in check_tape()
1121 STp->device->request_queue->rq_timeout, in check_tape()
1124 retval = (STp->buffer)->syscall_result; in check_tape()
1128 if (!SRpnt->result && !STp->buffer->cmdstat.have_sense) { in check_tape()
1129 STp->max_block = ((STp->buffer)->b_data[1] << 16) | in check_tape()
1130 ((STp->buffer)->b_data[2] << 8) | (STp->buffer)->b_data[3]; in check_tape()
1131 STp->min_block = ((STp->buffer)->b_data[4] << 8) | in check_tape()
1132 (STp->buffer)->b_data[5]; in check_tape()
1133 if ( DEB( debugging || ) !STp->inited) in check_tape()
1135 "Block limits %d - %d bytes.\n", in check_tape()
1136 STp->min_block, STp->max_block); in check_tape()
1138 STp->min_block = STp->max_block = (-1); in check_tape()
1148 STp->device->request_queue->rq_timeout, in check_tape()
1151 retval = (STp->buffer)->syscall_result; in check_tape()
1155 if ((STp->buffer)->syscall_result != 0) { in check_tape()
1157 STp->block_size = ST_DEFAULT_BLOCK; /* Educated guess (?) */ in check_tape()
1158 (STp->buffer)->syscall_result = 0; /* Prevent error propagation */ in check_tape()
1159 STp->drv_write_prot = 0; in check_tape()
1163 (STp->buffer)->b_data[0], in check_tape()
1164 (STp->buffer)->b_data[1], in check_tape()
1165 (STp->buffer)->b_data[2], in check_tape()
1166 (STp->buffer)->b_data[3]); in check_tape()
1168 if ((STp->buffer)->b_data[3] >= 8) { in check_tape()
1169 STp->drv_buffer = ((STp->buffer)->b_data[2] >> 4) & 7; in check_tape()
1170 STp->density = (STp->buffer)->b_data[4]; in check_tape()
1171 STp->block_size = (STp->buffer)->b_data[9] * 65536 + in check_tape()
1172 (STp->buffer)->b_data[10] * 256 + (STp->buffer)->b_data[11]; in check_tape()
1175 STp->density, in check_tape()
1176 (STp->buffer)->b_data[5] * 65536 + in check_tape()
1177 (STp->buffer)->b_data[6] * 256 + in check_tape()
1178 (STp->buffer)->b_data[7], in check_tape()
1179 STp->drv_buffer); in check_tape()
1181 STp->drv_write_prot = ((STp->buffer)->b_data[2] & 0x80) != 0; in check_tape()
1182 if (!STp->drv_buffer && STp->immediate_filemark) { in check_tape()
1184 "non-buffered tape: disabling " in check_tape()
1186 STp->immediate_filemark = 0; in check_tape()
1191 STp->inited = 1; in check_tape()
1193 if (STp->block_size > 0) in check_tape()
1194 (STp->buffer)->buffer_blocks = in check_tape()
1195 (STp->buffer)->buffer_size / STp->block_size; in check_tape()
1197 (STp->buffer)->buffer_blocks = 1; in check_tape()
1198 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in check_tape()
1201 STp->block_size, (STp->buffer)->buffer_size, in check_tape()
1202 (STp->buffer)->buffer_blocks); in check_tape()
1204 if (STp->drv_write_prot) { in check_tape()
1205 STp->write_prot = 1; in check_tape()
1212 retval = (-EROFS); in check_tape()
1217 if (STp->can_partitions && STp->nbr_partitions < 1) { in check_tape()
1222 if ((STp->partition = find_partition(STp)) < 0) { in check_tape()
1223 retval = STp->partition; in check_tape()
1226 STp->new_partition = STp->partition; in check_tape()
1227 STp->nbr_partitions = 1; /* This guess will be updated when necessary */ in check_tape()
1231 STp->density_changed = STp->blksize_changed = 0; in check_tape()
1232 STp->compression_changed = 0; in check_tape()
1233 if (!(STm->defaults_for_writes) && in check_tape()
1237 if (STp->default_drvbuffer != 0xff) { in check_tape()
1238 if (st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer)) in check_tape()
1242 STp->default_drvbuffer); in check_tape()
1257 int i, retval = (-EIO); in st_open()
1268 filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE); in st_open()
1271 return -ENXIO; in st_open()
1274 filp->private_data = STp; in st_open()
1277 if (STp->in_use) { in st_open()
1281 return (-EBUSY); in st_open()
1284 STp->in_use = 1; in st_open()
1286 STp->rew_at_close = STp->autorew_dev = (iminor(inode) & 0x80) == 0; in st_open()
1288 if (scsi_autopm_get_device(STp->device) < 0) { in st_open()
1289 retval = -EIO; in st_open()
1293 if (!scsi_block_when_processing_errors(STp->device)) { in st_open()
1294 retval = (-ENXIO); in st_open()
1299 if (!enlarge_buffer(STp->buffer, PAGE_SIZE)) { in st_open()
1302 retval = (-EOVERFLOW); in st_open()
1306 (STp->buffer)->cleared = 0; in st_open()
1307 (STp->buffer)->writing = 0; in st_open()
1308 (STp->buffer)->syscall_result = 0; in st_open()
1310 STp->write_prot = ((filp->f_flags & O_ACCMODE) == O_RDONLY); in st_open()
1312 STp->dirty = 0; in st_open()
1314 STps = &(STp->ps[i]); in st_open()
1315 STps->rw = ST_IDLE; in st_open()
1317 STp->try_dio_now = STp->try_dio; in st_open()
1318 STp->recover_count = 0; in st_open()
1319 DEB( STp->nbr_waits = STp->nbr_finished = 0; in st_open()
1320 STp->nbr_requests = STp->nbr_dio = STp->nbr_pages = 0; ) in st_open()
1325 if ((filp->f_flags & O_NONBLOCK) == 0 && in st_open()
1327 if (STp->ready == NO_TAPE) in st_open()
1328 retval = (-ENOMEDIUM); in st_open()
1330 retval = (-EIO); in st_open()
1336 normalize_buffer(STp->buffer); in st_open()
1338 STp->in_use = 0; in st_open()
1341 scsi_autopm_put_device(STp->device); in st_open()
1354 struct scsi_tape *STp = filp->private_data; in st_flush()
1355 struct st_modedef *STm = &(STp->modes[STp->current_mode]); in st_flush()
1356 struct st_partstat *STps = &(STp->ps[STp->partition]); in st_flush()
1361 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1363 if (result != 0 && result != (-ENOSPC)) in st_flush()
1367 if (STp->can_partitions && in st_flush()
1375 DEBC( if (STp->nbr_requests) in st_flush()
1378 "pages %d.\n", STp->nbr_requests, STp->nbr_dio, in st_flush()
1379 STp->nbr_pages)); in st_flush()
1381 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1382 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush()
1386 STp->nbr_waits, STp->nbr_finished); in st_flush()
1390 if (STp->immediate_filemark) in st_flush()
1392 cmd[4] = 1 + STp->two_fm; in st_flush()
1395 STp->device->request_queue->rq_timeout, in st_flush()
1398 result = (STp->buffer)->syscall_result; in st_flush()
1402 if (STp->buffer->syscall_result == 0 || in st_flush()
1403 (cmdstatp->have_sense && !cmdstatp->deferred && in st_flush()
1404 (cmdstatp->flags & SENSE_EOM) && in st_flush()
1405 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_flush()
1406 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) && in st_flush()
1407 (!cmdstatp->remainder_valid || cmdstatp->uremainder64 == 0))) { in st_flush()
1411 if (STps->drv_file >= 0) in st_flush()
1412 STps->drv_file++; in st_flush()
1413 STps->drv_block = 0; in st_flush()
1414 if (STp->two_fm) in st_flush()
1416 STps->eof = ST_FM; in st_flush()
1424 result = (-EIO); in st_flush()
1428 } else if (!STp->rew_at_close) { in st_flush()
1429 STps = &(STp->ps[STp->partition]); in st_flush()
1430 if (!STm->sysv || STps->rw != ST_READING) { in st_flush()
1431 if (STp->can_bsr) in st_flush()
1433 else if (STps->eof == ST_FM_HIT) { in st_flush()
1436 if (STps->drv_file >= 0) in st_flush()
1437 STps->drv_file++; in st_flush()
1438 STps->drv_block = 0; in st_flush()
1439 STps->eof = ST_FM; in st_flush()
1441 STps->eof = ST_NOEOF; in st_flush()
1443 } else if ((STps->eof == ST_NOEOF && in st_flush()
1445 STps->eof == ST_FM_HIT) { in st_flush()
1446 if (STps->drv_file >= 0) in st_flush()
1447 STps->drv_file++; in st_flush()
1448 STps->drv_block = 0; in st_flush()
1449 STps->eof = ST_FM; in st_flush()
1454 if (STp->rew_at_close) { in st_flush()
1467 struct scsi_tape *STp = filp->private_data; in st_release()
1469 if (STp->door_locked == ST_LOCKED_AUTO) in st_release()
1472 normalize_buffer(STp->buffer); in st_release()
1474 STp->in_use = 0; in st_release()
1476 scsi_autopm_put_device(STp->device); in st_release()
1493 if (!scsi_block_when_processing_errors(STp->device)) { in rw_checks()
1494 retval = (-ENXIO); in rw_checks()
1498 if (STp->ready != ST_READY) { in rw_checks()
1499 if (STp->ready == ST_NO_TAPE) in rw_checks()
1500 retval = (-ENOMEDIUM); in rw_checks()
1502 retval = (-EIO); in rw_checks()
1506 if (! STp->modes[STp->current_mode].defined) { in rw_checks()
1507 retval = (-ENXIO); in rw_checks()
1516 if (STp->pos_unknown) { in rw_checks()
1517 retval = (-EIO); in rw_checks()
1525 if (!STp->in_use) { in rw_checks()
1528 retval = (-EIO); in rw_checks()
1532 if (STp->can_partitions && in rw_checks()
1536 if (STp->block_size == 0 && STp->max_block > 0 && in rw_checks()
1537 (count < STp->min_block || count > STp->max_block)) { in rw_checks()
1538 retval = (-EINVAL); in rw_checks()
1542 if (STp->do_auto_lock && STp->door_locked == ST_UNLOCKED && in rw_checks()
1544 STp->door_locked = ST_LOCKED_AUTO; in rw_checks()
1555 struct st_buffer *STbp = STp->buffer; in setup_buffering()
1558 i = STp->try_dio_now && try_rdio; in setup_buffering()
1560 i = STp->try_dio_now && try_wdio; in setup_buffering()
1563 STp->device->request_queue)) == 0) { in setup_buffering()
1564 i = sgl_map_user_pages(STbp, STbp->use_sg, (unsigned long)buf, in setup_buffering()
1567 STbp->do_dio = i; in setup_buffering()
1568 STbp->buffer_bytes = 0; /* can be used as transfer counter */ in setup_buffering()
1571 STbp->do_dio = 0; /* fall back to buffering with any error */ in setup_buffering()
1572 STbp->sg_segs = STbp->do_dio; in setup_buffering()
1574 if (STbp->do_dio) { in setup_buffering()
1575 STp->nbr_dio++; in setup_buffering()
1576 STp->nbr_pages += STbp->do_dio; in setup_buffering()
1580 STbp->do_dio = 0; in setup_buffering()
1581 DEB( STp->nbr_requests++; ) in setup_buffering()
1583 if (!STbp->do_dio) { in setup_buffering()
1584 if (STp->block_size) in setup_buffering()
1585 bufsize = STp->block_size > st_fixed_buffer_size ? in setup_buffering()
1586 STp->block_size : st_fixed_buffer_size; in setup_buffering()
1591 if (is_read && STp->sili && !STbp->cleared) in setup_buffering()
1595 if (bufsize > STbp->buffer_size && in setup_buffering()
1600 retval = (-EOVERFLOW); in setup_buffering()
1603 if (STp->block_size) in setup_buffering()
1604 STbp->buffer_blocks = bufsize / STp->block_size; in setup_buffering()
1617 STbp = STp->buffer; in release_buffering()
1618 if (STbp->do_dio) { in release_buffering()
1619 sgl_unmap_user_pages(STbp, STbp->do_dio, is_read); in release_buffering()
1620 STbp->do_dio = 0; in release_buffering()
1621 STbp->sg_segs = 0; in release_buffering()
1638 struct scsi_tape *STp = filp->private_data; in st_write()
1643 if (mutex_lock_interruptible(&STp->lock)) in st_write()
1644 return -ERESTARTSYS; in st_write()
1651 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_write()
1654 retval = (-EINVAL); in st_write()
1658 STm = &(STp->modes[STp->current_mode]); in st_write()
1659 STps = &(STp->ps[STp->partition]); in st_write()
1661 if (STp->write_prot) { in st_write()
1662 retval = (-EACCES); in st_write()
1667 if (STps->rw == ST_READING) { in st_write()
1671 STps->rw = ST_WRITING; in st_write()
1672 } else if (STps->rw != ST_WRITING && in st_write()
1673 STps->drv_file == 0 && STps->drv_block == 0) { in st_write()
1676 if (STm->default_compression != ST_DONT_TOUCH && in st_write()
1677 !(STp->compression_changed)) { in st_write()
1678 if (st_compression(STp, (STm->default_compression == ST_YES))) { in st_write()
1682 retval = (-EINVAL); in st_write()
1689 STbp = STp->buffer; in st_write()
1692 if (i == -ENOSPC) in st_write()
1693 STps->eof = ST_EOM_OK; in st_write()
1695 STps->eof = ST_EOM_ERROR; in st_write()
1698 if (STps->eof == ST_EOM_OK) { in st_write()
1699 STps->eof = ST_EOD_1; /* allow next write */ in st_write()
1700 retval = (-ENOSPC); in st_write()
1703 else if (STps->eof == ST_EOM_ERROR) { in st_write()
1704 retval = (-EIO); in st_write()
1710 if (STp->block_size != 0 && in st_write()
1711 !STbp->do_dio && in st_write()
1713 copy_from_user(&i, buf + count - 1, 1) != 0)) { in st_write()
1714 retval = (-EFAULT); in st_write()
1726 cmd[1] = (STp->block_size != 0); in st_write()
1728 STps->rw = ST_WRITING; in st_write()
1733 if (STbp->do_dio) { in st_write()
1737 if (STp->block_size == 0) in st_write()
1740 do_count = STbp->buffer_blocks * STp->block_size - in st_write()
1741 STbp->buffer_bytes; in st_write()
1752 count -= do_count; in st_write()
1755 async_write = STp->block_size == 0 && !STbp->do_dio && in st_write()
1756 STm->do_async_writes && STps->eof < ST_EOM_OK; in st_write()
1758 if (STp->block_size != 0 && STm->do_buffer_writes && in st_write()
1759 !(STp->try_dio_now && try_wdio) && STps->eof < ST_EOM_OK && in st_write()
1760 STbp->buffer_bytes < STbp->buffer_size) { in st_write()
1761 STp->dirty = 1; in st_write()
1768 if (STp->block_size == 0) in st_write()
1771 if (!STbp->do_dio) in st_write()
1772 blks = STbp->buffer_bytes; in st_write()
1775 blks /= STp->block_size; in st_write()
1776 transfer = blks * STp->block_size; in st_write()
1783 STp->device->request_queue->rq_timeout, in st_write()
1786 retval = STbp->syscall_result; in st_write()
1789 if (async_write && !STbp->syscall_result) { in st_write()
1790 STbp->writing = transfer; in st_write()
1791 STp->dirty = !(STbp->writing == in st_write()
1792 STbp->buffer_bytes); in st_write()
1794 DEB( STp->write_pending = 1; ) in st_write()
1798 if (STbp->syscall_result != 0) { in st_write()
1799 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_write()
1802 if (cmdstatp->have_sense && (cmdstatp->flags & SENSE_EOM)) { in st_write()
1803 scode = cmdstatp->sense_hdr.sense_key; in st_write()
1804 if (cmdstatp->remainder_valid) in st_write()
1805 undone = (int)cmdstatp->uremainder64; in st_write()
1806 else if (STp->block_size == 0 && in st_write()
1811 if (STp->block_size != 0) in st_write()
1812 undone *= STp->block_size; in st_write()
1816 b_point -= undone; in st_write()
1817 do_count -= undone; in st_write()
1818 if (STp->block_size) in st_write()
1819 blks = (transfer - undone) / STp->block_size; in st_write()
1820 STps->eof = ST_EOM_OK; in st_write()
1825 if (STp->block_size == 0 || in st_write()
1827 retval = (-ENOSPC); /* EOM within current request */ in st_write()
1834 if (!retry_eot && !cmdstatp->deferred && in st_write()
1836 move_buffer_data(STp->buffer, transfer - undone); in st_write()
1838 if (STps->drv_block >= 0) { in st_write()
1839 STps->drv_block += (transfer - undone) / in st_write()
1840 STp->block_size; in st_write()
1842 STps->eof = ST_EOM_OK; in st_write()
1846 STp->buffer->buffer_bytes); in st_write()
1852 count -= do_count; in st_write()
1854 STps->eof = ST_EOM_ERROR; in st_write()
1855 STps->drv_block = (-1); /* Too cautious? */ in st_write()
1856 retval = (-EIO); /* EOM for old data */ in st_write()
1863 STps->drv_block = (-1); /* Too cautious? */ in st_write()
1864 retval = STbp->syscall_result; in st_write()
1869 if (STps->drv_block >= 0) { in st_write()
1870 if (STp->block_size == 0) in st_write()
1871 STps->drv_block += (do_count > 0); in st_write()
1873 STps->drv_block += blks; in st_write()
1876 STbp->buffer_bytes = 0; in st_write()
1877 STp->dirty = 0; in st_write()
1881 retval = total - count; in st_write()
1886 if (STps->eof == ST_EOD_1) in st_write()
1887 STps->eof = ST_EOM_OK; in st_write()
1888 else if (STps->eof != ST_EOM_OK) in st_write()
1889 STps->eof = ST_NOEOF; in st_write()
1890 retval = total - count; in st_write()
1896 mutex_unlock(&STp->lock); in st_write()
1921 STm = &(STp->modes[STp->current_mode]); in read_tape()
1922 STps = &(STp->ps[STp->partition]); in read_tape()
1923 if (STps->eof == ST_FM_HIT) in read_tape()
1925 STbp = STp->buffer; in read_tape()
1927 if (STp->block_size == 0) in read_tape()
1930 if (!(STp->try_dio_now && try_rdio) && STm->do_read_ahead) { in read_tape()
1931 blks = (STp->buffer)->buffer_blocks; in read_tape()
1932 bytes = blks * STp->block_size; in read_tape()
1935 if (!STbp->do_dio && bytes > (STp->buffer)->buffer_size) in read_tape()
1936 bytes = (STp->buffer)->buffer_size; in read_tape()
1937 blks = bytes / STp->block_size; in read_tape()
1938 bytes = blks * STp->block_size; in read_tape()
1944 cmd[1] = (STp->block_size != 0); in read_tape()
1945 if (!cmd[1] && STp->sili) in read_tape()
1953 STp->device->request_queue->rq_timeout, in read_tape()
1958 return STbp->syscall_result; in read_tape()
1960 STbp->read_pointer = 0; in read_tape()
1961 STps->at_sm = 0; in read_tape()
1964 if (STbp->syscall_result) { in read_tape()
1965 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in read_tape()
1970 SRpnt->sense[0], SRpnt->sense[1], in read_tape()
1971 SRpnt->sense[2], SRpnt->sense[3], in read_tape()
1972 SRpnt->sense[4], SRpnt->sense[5], in read_tape()
1973 SRpnt->sense[6], SRpnt->sense[7]); in read_tape()
1974 if (cmdstatp->have_sense) { in read_tape()
1976 if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK) in read_tape()
1977 cmdstatp->flags &= 0xcf; /* No need for EOM in this case */ in read_tape()
1979 if (cmdstatp->flags != 0) { /* EOF, EOM, or ILI */ in read_tape()
1981 if (cmdstatp->remainder_valid) in read_tape()
1982 transfer = (int)cmdstatp->uremainder64; in read_tape()
1985 if (cmdstatp->sense_hdr.sense_key == MEDIUM_ERROR) { in read_tape()
1986 if (STp->block_size == 0) in read_tape()
1989 cmdstatp->flags &= ~SENSE_ILI; in read_tape()
1992 if (cmdstatp->flags & SENSE_ILI) { /* ILI */ in read_tape()
1993 if (STp->block_size == 0 && in read_tape()
1999 bytes - transfer, in read_tape()
2001 if (STps->drv_block >= 0) in read_tape()
2002 STps->drv_block += 1; in read_tape()
2003 STbp->buffer_bytes = 0; in read_tape()
2004 return (-ENOMEM); in read_tape()
2005 } else if (STp->block_size == 0) { in read_tape()
2006 STbp->buffer_bytes = bytes - transfer; in read_tape()
2014 if (STps->drv_block >= 0) in read_tape()
2015 STps->drv_block += blks - transfer + 1; in read_tape()
2017 return (-EIO); in read_tape()
2020 STbp->buffer_bytes = (blks - transfer) * in read_tape()
2021 STp->block_size; in read_tape()
2026 STbp->buffer_bytes); in read_tape()
2027 if (STps->drv_block >= 0) in read_tape()
2028 STps->drv_block += 1; in read_tape()
2030 return (-EIO); in read_tape()
2032 } else if (cmdstatp->flags & SENSE_FMK) { /* FM overrides EOM */ in read_tape()
2033 if (STps->eof != ST_FM_HIT) in read_tape()
2034 STps->eof = ST_FM_HIT; in read_tape()
2036 STps->eof = ST_EOD_2; in read_tape()
2037 if (STp->block_size == 0) in read_tape()
2038 STbp->buffer_bytes = 0; in read_tape()
2040 STbp->buffer_bytes = in read_tape()
2041 bytes - transfer * STp->block_size; in read_tape()
2044 STbp->buffer_bytes); in read_tape()
2045 } else if (cmdstatp->flags & SENSE_EOM) { in read_tape()
2046 if (STps->eof == ST_FM) in read_tape()
2047 STps->eof = ST_EOD_1; in read_tape()
2049 STps->eof = ST_EOM_OK; in read_tape()
2050 if (STp->block_size == 0) in read_tape()
2051 STbp->buffer_bytes = bytes - transfer; in read_tape()
2053 STbp->buffer_bytes = in read_tape()
2054 bytes - transfer * STp->block_size; in read_tape()
2058 STbp->buffer_bytes); in read_tape()
2064 STps->drv_block = (-1); in read_tape()
2065 if (STps->eof == ST_FM && in read_tape()
2066 cmdstatp->sense_hdr.sense_key == BLANK_CHECK) { in read_tape()
2070 STps->eof = ST_EOD_2; /* First BLANK_CHECK after FM */ in read_tape()
2072 retval = (-EIO); in read_tape()
2075 if (STbp->buffer_bytes < 0) /* Caused by bogus sense data */ in read_tape()
2076 STbp->buffer_bytes = 0; in read_tape()
2079 else { /* Non-extended sense */ in read_tape()
2080 retval = STbp->syscall_result; in read_tape()
2086 STbp->buffer_bytes = bytes; in read_tape()
2087 if (STp->sili) /* In fixed block mode residual is always zero here */ in read_tape()
2088 STbp->buffer_bytes -= STp->buffer->cmdstat.residual; in read_tape()
2091 if (STps->drv_block >= 0) { in read_tape()
2092 if (STp->block_size == 0) in read_tape()
2093 STps->drv_block++; in read_tape()
2095 STps->drv_block += STbp->buffer_bytes / STp->block_size; in read_tape()
2110 struct scsi_tape *STp = filp->private_data; in st_read()
2113 struct st_buffer *STbp = STp->buffer; in st_read()
2115 if (mutex_lock_interruptible(&STp->lock)) in st_read()
2116 return -ERESTARTSYS; in st_read()
2122 STm = &(STp->modes[STp->current_mode]); in st_read()
2123 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_read()
2124 if (!STm->do_read_ahead) { in st_read()
2125 retval = (-EINVAL); /* Read must be integral number of blocks */ in st_read()
2128 STp->try_dio_now = 0; /* Direct i/o can't handle split blocks */ in st_read()
2131 STps = &(STp->ps[STp->partition]); in st_read()
2132 if (STps->rw == ST_WRITING) { in st_read()
2136 STps->rw = ST_READING; in st_read()
2139 if (debugging && STps->eof != ST_NOEOF) in st_read()
2142 STps->eof, STbp->buffer_bytes); in st_read()
2148 do_dio = STbp->do_dio; in st_read()
2150 if (STbp->buffer_bytes == 0 && in st_read()
2151 STps->eof >= ST_EOD_1) { in st_read()
2152 if (STps->eof < ST_EOD) { in st_read()
2153 STps->eof += 1; in st_read()
2157 retval = (-EIO); /* EOM or Blank Check */ in st_read()
2166 copy_from_user(&i, buf + count - 1, 1) != 0 || in st_read()
2167 copy_to_user(buf + count - 1, &i, 1) != 0) { in st_read()
2168 retval = (-EFAULT); in st_read()
2173 STps->rw = ST_READING; in st_read()
2180 if (STbp->buffer_bytes == 0) { in st_read()
2181 special = read_tape(STp, count - total, &SRpnt); in st_read()
2189 if (STbp->buffer_bytes > 0) { in st_read()
2191 if (debugging && STps->eof != ST_NOEOF) in st_read()
2194 STps->eof, STbp->buffer_bytes, in st_read()
2195 (int)(count - total)); in st_read()
2197 transfer = STbp->buffer_bytes < count - total ? in st_read()
2198 STbp->buffer_bytes : count - total; in st_read()
2210 if (STp->block_size == 0) in st_read()
2218 if (STps->eof == ST_FM_HIT) { in st_read()
2219 STps->eof = ST_FM; in st_read()
2220 STps->drv_block = 0; in st_read()
2221 if (STps->drv_file >= 0) in st_read()
2222 STps->drv_file++; in st_read()
2223 } else if (STps->eof == ST_EOD_1) { in st_read()
2224 STps->eof = ST_EOD_2; in st_read()
2225 STps->drv_block = 0; in st_read()
2226 if (STps->drv_file >= 0) in st_read()
2227 STps->drv_file++; in st_read()
2228 } else if (STps->eof == ST_EOD_2) in st_read()
2229 STps->eof = ST_EOD; in st_read()
2230 } else if (STps->eof == ST_FM) in st_read()
2231 STps->eof = ST_NOEOF; in st_read()
2241 STbp->buffer_bytes = 0; in st_read()
2243 mutex_unlock(&STp->lock); in st_read()
2258 STp->current_mode, STm->do_buffer_writes, in DEB()
2259 STm->do_async_writes, STm->do_read_ahead); in DEB()
2263 STp->can_bsr, STp->two_fm, STp->fast_mteom, in DEB()
2264 STp->do_auto_lock); in DEB()
2267 "partitions: %d, s2 log: %d\n", in DEB()
2268 STm->defaults_for_writes, STp->omit_blklims, in DEB()
2269 STp->can_partitions, STp->scsi2_logical); in DEB()
2273 STm->sysv, STp->immediate, STp->sili, in DEB()
2274 STp->immediate_filemark); in DEB()
2289 STm = &(STp->modes[STp->current_mode]);
2290 if (!STm->defined) {
2291 cd0 = STm->cdevs[0];
2292 cd1 = STm->cdevs[1];
2293 d0 = STm->devs[0];
2294 d1 = STm->devs[1];
2295 memcpy(STm, &(STp->modes[0]), sizeof(struct st_modedef));
2296 STm->cdevs[0] = cd0;
2297 STm->cdevs[1] = cd1;
2298 STm->devs[0] = d0;
2299 STm->devs[1] = d1;
2302 STp->current_mode);
2307 STm->do_buffer_writes = (options & MT_ST_BUFFER_WRITES) != 0;
2308 STm->do_async_writes = (options & MT_ST_ASYNC_WRITES) != 0;
2309 STm->defaults_for_writes = (options & MT_ST_DEF_WRITES) != 0;
2310 STm->do_read_ahead = (options & MT_ST_READ_AHEAD) != 0;
2311 STp->two_fm = (options & MT_ST_TWO_FM) != 0;
2312 STp->fast_mteom = (options & MT_ST_FAST_MTEOM) != 0;
2313 STp->do_auto_lock = (options & MT_ST_AUTO_LOCK) != 0;
2314 STp->can_bsr = (options & MT_ST_CAN_BSR) != 0;
2315 STp->omit_blklims = (options & MT_ST_NO_BLKLIMS) != 0;
2316 if ((STp->device)->scsi_level >= SCSI_2)
2317 STp->can_partitions = (options & MT_ST_CAN_PARTITIONS) != 0;
2318 STp->scsi2_logical = (options & MT_ST_SCSI2LOGICAL) != 0;
2319 STp->immediate = (options & MT_ST_NOWAIT) != 0;
2320 STp->immediate_filemark = (options & MT_ST_NOWAIT_EOF) != 0;
2321 STm->sysv = (options & MT_ST_SYSV) != 0;
2322 STp->sili = (options & MT_ST_SILI) != 0;
2328 STm->do_buffer_writes = value;
2330 STm->do_async_writes = value;
2332 STm->defaults_for_writes = value;
2334 STm->do_read_ahead = value;
2336 STp->two_fm = value;
2338 STp->fast_mteom = value;
2340 STp->do_auto_lock = value;
2342 STp->can_bsr = value;
2344 STp->omit_blklims = value;
2345 if ((STp->device)->scsi_level >= SCSI_2 &&
2347 STp->can_partitions = value;
2349 STp->scsi2_logical = value;
2351 STp->immediate = value;
2353 STp->immediate_filemark = value;
2355 STm->sysv = value;
2357 STp->sili = value;
2367 STm->default_blksize = (-1);
2370 STm->default_blksize = value;
2372 "%d bytes.\n", STm->default_blksize);
2373 if (STp->ready == ST_READY) {
2374 STp->blksize_changed = 0;
2381 STp->long_timeout = (value & ~MT_ST_SET_LONG_TIMEOUT) * HZ;
2385 blk_queue_rq_timeout(STp->device->request_queue,
2395 return (-EINVAL);
2396 STp->cln_mode = value;
2397 STp->cln_sense_mask = (options >> 8) & 0xff;
2398 STp->cln_sense_value = (options >> 16) & 0xff;
2401 value, STp->cln_sense_mask, STp->cln_sense_value);
2407 STm->default_density = (-1);
2411 STm->default_density = value & 0xff;
2413 STm->default_density);
2414 if (STp->ready == ST_READY) {
2415 STp->density_changed = 0;
2421 STp->default_drvbuffer = 0xff;
2425 STp->default_drvbuffer = value & 7;
2428 STp->default_drvbuffer);
2429 if (STp->ready == ST_READY)
2430 st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer);
2434 STm->default_compression = ST_DONT_TOUCH;
2439 STp->c_algo = (value & 0xff00) >> 8;
2442 STp->c_algo);
2445 STm->default_compression = (value & 1 ? ST_YES : ST_NO);
2449 if (STp->ready == ST_READY) {
2450 STp->compression_changed = 0;
2451 st_compression(STp, (STm->default_compression == ST_YES));
2457 return (-EIO);
2497 STp->device->request_queue->rq_timeout, 0, 1); in read_mode_page()
2499 return (STp->buffer)->syscall_result; in read_mode_page()
2503 return STp->buffer->syscall_result; in read_mode_page()
2508 in the buffer is correctly formatted. The long timeout is used if slow is non-zero. */
2519 pgo = MODE_HEADER_LENGTH + (STp->buffer)->b_data[MH_OFF_BDESCS_LENGTH]; in write_mode_page()
2520 cmd[4] = pgo + (STp->buffer)->b_data[pgo + MP_OFF_PAGE_LENGTH] + 2; in write_mode_page()
2523 (STp->buffer)->b_data[MH_OFF_DATA_LENGTH] = 0; in write_mode_page()
2524 (STp->buffer)->b_data[MH_OFF_MEDIUM_TYPE] = 0; in write_mode_page()
2525 (STp->buffer)->b_data[MH_OFF_DEV_SPECIFIC] &= ~MH_BIT_WP; in write_mode_page()
2526 (STp->buffer)->b_data[pgo + MP_OFF_PAGE_NBR] &= MP_MSK_PAGE_NBR; in write_mode_page()
2529 STp->long_timeout : STp->device->request_queue->rq_timeout; in write_mode_page()
2533 return (STp->buffer)->syscall_result; in write_mode_page()
2537 return STp->buffer->syscall_result; in write_mode_page()
2554 The block descriptors are read and written because Sony SDT-7000 does not
2562 unsigned char *b_data = (STp->buffer)->b_data; in st_compression()
2564 if (STp->ready != ST_READY) in st_compression()
2565 return (-EIO); in st_compression()
2571 return (-EIO); in st_compression()
2581 return (-EIO); in st_compression()
2587 if (STp->c_algo != 0) in st_compression()
2588 b_data[mpoffs + CP_OFF_C_ALGO] = STp->c_algo; in st_compression()
2592 if (STp->c_algo != 0) in st_compression()
2599 return (-EIO); in st_compression()
2603 STp->compression_changed = 1; in st_compression()
2611 int retval = (-EIO), timeout; in do_load_unload()
2616 if (STp->ready != ST_READY && !load_code) { in do_load_unload()
2617 if (STp->ready == ST_NO_TAPE) in do_load_unload()
2618 return (-ENOMEDIUM); in do_load_unload()
2620 return (-EIO); in do_load_unload()
2634 load_code - MT_ST_HPLOADER_OFFSET); in do_load_unload()
2635 cmd[3] = load_code - MT_ST_HPLOADER_OFFSET; /* MediaID field of C1553A */ in do_load_unload()
2637 if (STp->immediate) { in do_load_unload()
2639 timeout = STp->device->request_queue->rq_timeout; in do_load_unload()
2642 timeout = STp->long_timeout; in do_load_unload()
2654 return (STp->buffer)->syscall_result; in do_load_unload()
2656 retval = (STp->buffer)->syscall_result; in do_load_unload()
2662 STp->rew_at_close = 0; in do_load_unload()
2663 STp->ready = ST_NO_TAPE; in do_load_unload()
2666 STp->rew_at_close = STp->autorew_dev; in do_load_unload()
2673 STps = &(STp->ps[STp->partition]); in do_load_unload()
2674 STps->drv_file = STps->drv_block = (-1); in do_load_unload()
2685 s32 sc; in deb_space_print() local
2690 sc = sign_extend32(get_unaligned_be24(&cmd[2]), 23); in deb_space_print()
2692 sc = -sc; in deb_space_print()
2694 direction ? "backward" : "forward", sc, units); in deb_space_print()
2716 WARN_ON(STp->buffer->do_dio != 0); in st_int_ioctl()
2717 if (STp->ready != ST_READY) { in st_int_ioctl()
2718 if (STp->ready == ST_NO_TAPE) in st_int_ioctl()
2719 return (-ENOMEDIUM); in st_int_ioctl()
2721 return (-EIO); in st_int_ioctl()
2723 timeout = STp->long_timeout; in st_int_ioctl()
2724 STps = &(STp->ps[STp->partition]); in st_int_ioctl()
2725 fileno = STps->drv_file; in st_int_ioctl()
2726 blkno = STps->drv_block; in st_int_ioctl()
2727 at_sm = STps->at_sm; in st_int_ioctl()
2752 ltmp = (-arg); in st_int_ioctl()
2758 fileno -= arg; in st_int_ioctl()
2759 blkno = (-1); /* We can't know the block number */ in st_int_ioctl()
2776 ltmp = (-arg); in st_int_ioctl()
2782 blkno -= arg; in st_int_ioctl()
2793 blkno = fileno = (-1); in st_int_ioctl()
2800 ltmp = (-arg); in st_int_ioctl()
2806 blkno = fileno = (-1); in st_int_ioctl()
2813 if (STp->write_prot) in st_int_ioctl()
2814 return (-EACCES); in st_int_ioctl()
2819 (cmd_in == MTWEOF && STp->immediate_filemark)) in st_int_ioctl()
2824 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2846 if (STp->immediate) { in st_int_ioctl()
2848 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2858 if (STp->immediate) { in st_int_ioctl()
2860 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2867 if (!STp->fast_mteom) { in st_int_ioctl()
2870 fileno = STps->drv_file; in st_int_ioctl()
2871 if (STps->eof >= ST_EOD_1) in st_int_ioctl()
2878 fileno = (-1); in st_int_ioctl()
2882 blkno = -1; in st_int_ioctl()
2886 if (STp->write_prot) in st_int_ioctl()
2887 return (-EACCES); in st_int_ioctl()
2889 cmd[1] = (arg ? 1 : 0); /* Long erase with non-zero argument */ in st_int_ioctl()
2890 if (STp->immediate) { in st_int_ioctl()
2892 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2895 timeout = STp->long_timeout * 8; in st_int_ioctl()
2905 if (STp->dirty || (STp->buffer)->buffer_bytes != 0) in st_int_ioctl()
2906 return (-EIO); /* Not allowed if data in buffer */ in st_int_ioctl()
2909 STp->max_block > 0 && in st_int_ioctl()
2910 ((arg & MT_ST_BLKSIZE_MASK) < STp->min_block || in st_int_ioctl()
2911 (arg & MT_ST_BLKSIZE_MASK) > STp->max_block)) { in st_int_ioctl()
2913 return (-EINVAL); in st_int_ioctl()
2916 if ((STp->use_pf & USE_PF)) in st_int_ioctl()
2921 memset((STp->buffer)->b_data, 0, 12); in st_int_ioctl()
2923 (STp->buffer)->b_data[2] = (arg & 7) << 4; in st_int_ioctl()
2925 (STp->buffer)->b_data[2] = in st_int_ioctl()
2926 STp->drv_buffer << 4; in st_int_ioctl()
2927 (STp->buffer)->b_data[3] = 8; /* block descriptor length */ in st_int_ioctl()
2929 (STp->buffer)->b_data[4] = arg; in st_int_ioctl()
2930 STp->density_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2932 (STp->buffer)->b_data[4] = arg >> 24; in st_int_ioctl()
2934 (STp->buffer)->b_data[4] = STp->density; in st_int_ioctl()
2938 STp->blksize_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2940 ltmp = STp->block_size; in st_int_ioctl()
2941 (STp->buffer)->b_data[9] = (ltmp >> 16); in st_int_ioctl()
2942 (STp->buffer)->b_data[10] = (ltmp >> 8); in st_int_ioctl()
2943 (STp->buffer)->b_data[11] = ltmp; in st_int_ioctl()
2944 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2949 (STp->buffer)->b_data[9] * 65536 + in st_int_ioctl()
2950 (STp->buffer)->b_data[10] * 256 + in st_int_ioctl()
2951 (STp->buffer)->b_data[11]); in st_int_ioctl()
2955 (STp->buffer)->b_data[4]); in st_int_ioctl()
2959 ((STp->buffer)->b_data[2] >> 4) & 7); in st_int_ioctl()
2963 return (-ENOSYS); in st_int_ioctl()
2969 return (STp->buffer)->syscall_result; in st_int_ioctl()
2971 ioctl_result = (STp->buffer)->syscall_result; in st_int_ioctl()
2976 STps->drv_block = blkno; in st_int_ioctl()
2977 STps->drv_file = fileno; in st_int_ioctl()
2978 STps->at_sm = at_sm; in st_int_ioctl()
2986 STp->block_size = arg & MT_ST_BLKSIZE_MASK; in st_int_ioctl()
2987 if (STp->block_size != 0) { in st_int_ioctl()
2988 (STp->buffer)->buffer_blocks = in st_int_ioctl()
2989 (STp->buffer)->buffer_size / STp->block_size; in st_int_ioctl()
2991 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in st_int_ioctl()
2993 STp->density = arg >> MT_ST_DENSITY_SHIFT; in st_int_ioctl()
2995 STp->drv_buffer = (arg & 7); in st_int_ioctl()
2997 STp->density = arg; in st_int_ioctl()
3000 STps->eof = ST_EOD; in st_int_ioctl()
3002 STps->eof = ST_FM; in st_int_ioctl()
3004 STps->eof = ST_NOEOF; in st_int_ioctl()
3007 STps->rw = ST_IDLE; /* prevent automatic WEOF at close */ in st_int_ioctl()
3010 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_int_ioctl()
3012 if (cmdstatp->flags & SENSE_EOM) { in st_int_ioctl()
3015 STps->eof = ST_EOM_OK; in st_int_ioctl()
3016 STps->drv_block = 0; in st_int_ioctl()
3019 if (cmdstatp->remainder_valid) in st_int_ioctl()
3020 undone = (int)cmdstatp->uremainder64; in st_int_ioctl()
3025 cmdstatp->have_sense && in st_int_ioctl()
3026 (cmdstatp->flags & SENSE_EOM)) { in st_int_ioctl()
3027 if (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_int_ioctl()
3028 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) { in st_int_ioctl()
3030 STps->eof = ST_NOEOF; in st_int_ioctl()
3033 fileno -= undone; in st_int_ioctl()
3035 STps->eof = ST_NOEOF; in st_int_ioctl()
3037 STps->drv_file = fileno; in st_int_ioctl()
3040 STps->drv_file = fileno - undone; in st_int_ioctl()
3042 STps->drv_file = fileno; in st_int_ioctl()
3043 STps->drv_block = -1; in st_int_ioctl()
3044 STps->eof = ST_NOEOF; in st_int_ioctl()
3047 undone = (-undone); in st_int_ioctl()
3048 if (STps->drv_file >= 0) in st_int_ioctl()
3049 STps->drv_file = fileno + undone; in st_int_ioctl()
3050 STps->drv_block = 0; in st_int_ioctl()
3051 STps->eof = ST_NOEOF; in st_int_ioctl()
3053 if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */ in st_int_ioctl()
3054 if (STps->drv_file >= 0) in st_int_ioctl()
3055 STps->drv_file++; in st_int_ioctl()
3056 STps->drv_block = 0; in st_int_ioctl()
3057 STps->eof = ST_FM; in st_int_ioctl()
3060 STps->drv_block = blkno - undone; in st_int_ioctl()
3062 STps->drv_block = (-1); in st_int_ioctl()
3063 STps->eof = ST_NOEOF; in st_int_ioctl()
3066 if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */ in st_int_ioctl()
3067 STps->drv_file--; in st_int_ioctl()
3068 STps->drv_block = (-1); in st_int_ioctl()
3071 undone = (-undone); in st_int_ioctl()
3072 if (STps->drv_block >= 0) in st_int_ioctl()
3073 STps->drv_block = blkno + undone; in st_int_ioctl()
3075 STps->eof = ST_NOEOF; in st_int_ioctl()
3077 STps->drv_file = (-1); in st_int_ioctl()
3078 STps->drv_block = (-1); in st_int_ioctl()
3079 STps->eof = ST_EOD; in st_int_ioctl()
3084 if (cmdstatp->sense_hdr.sense_key == ILLEGAL_REQUEST && in st_int_ioctl()
3085 !(STp->use_pf & PF_TESTED)) { in st_int_ioctl()
3088 STp->use_pf = (STp->use_pf ^ USE_PF) | PF_TESTED; in st_int_ioctl()
3094 STps->eof = ST_NOEOF; in st_int_ioctl()
3096 if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK) in st_int_ioctl()
3097 STps->eof = ST_EOD; in st_int_ioctl()
3117 if (STp->ready != ST_READY) in get_location()
3118 return (-EIO); in get_location()
3121 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3126 if (!logical && !STp->scsi2_logical) in get_location()
3130 STp->device->request_queue->rq_timeout, in get_location()
3133 return (STp->buffer)->syscall_result; in get_location()
3135 if ((STp->buffer)->syscall_result != 0 || in get_location()
3136 (STp->device->scsi_level >= SCSI_2 && in get_location()
3137 ((STp->buffer)->b_data[0] & 4) != 0)) { in get_location()
3140 result = (-EIO); in get_location()
3143 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3144 *block = ((STp->buffer)->b_data[0] << 16) in get_location()
3145 + ((STp->buffer)->b_data[1] << 8) in get_location()
3146 + (STp->buffer)->b_data[2]; in get_location()
3149 *block = ((STp->buffer)->b_data[4] << 24) in get_location()
3150 + ((STp->buffer)->b_data[5] << 16) in get_location()
3151 + ((STp->buffer)->b_data[6] << 8) in get_location()
3152 + (STp->buffer)->b_data[7]; in get_location()
3153 *partition = (STp->buffer)->b_data[1]; in get_location()
3154 if (((STp->buffer)->b_data[0] & 0x80) && in get_location()
3155 (STp->buffer)->b_data[1] == 0) /* BOP of partition 0 */ in get_location()
3156 STp->ps[0].drv_block = STp->ps[0].drv_file = 0; in get_location()
3180 if (STp->ready != ST_READY) in set_location()
3181 return (-EIO); in set_location()
3182 timeout = STp->long_timeout; in set_location()
3183 STps = &(STp->ps[STp->partition]); in set_location()
3188 return (-EIO); ) in set_location()
3191 if ((!STp->can_partitions && partition != 0) || in set_location()
3193 return (-EINVAL); in set_location()
3194 if (partition != STp->partition) { in set_location()
3196 STps->last_block_valid = 0; in set_location()
3198 STps->last_block_valid = 1; in set_location()
3199 STps->last_block_visited = blk; in set_location()
3202 blk, STp->partition); in set_location()
3207 if ((STp->device)->scsi_level < SCSI_2) { in set_location()
3219 if (!logical && !STp->scsi2_logical) in set_location()
3221 if (STp->partition != partition) { in set_location()
3225 "from %d to %d\n", STp->partition, in set_location()
3229 if (STp->immediate) { in set_location()
3231 timeout = STp->device->request_queue->rq_timeout; in set_location()
3237 return (STp->buffer)->syscall_result; in set_location()
3239 STps->drv_block = STps->drv_file = (-1); in set_location()
3240 STps->eof = ST_NOEOF; in set_location()
3241 if ((STp->buffer)->syscall_result != 0) { in set_location()
3242 result = (-EIO); in set_location()
3243 if (STp->can_partitions && in set_location()
3244 (STp->device)->scsi_level >= SCSI_2 && in set_location()
3246 STp->partition = p; in set_location()
3248 if (STp->can_partitions) { in set_location()
3249 STp->partition = partition; in set_location()
3250 STps = &(STp->ps[partition]); in set_location()
3251 if (!STps->last_block_valid || in set_location()
3252 STps->last_block_visited != block) { in set_location()
3253 STps->at_sm = 0; in set_location()
3254 STps->rw = ST_IDLE; in set_location()
3257 STps->at_sm = 0; in set_location()
3259 STps->drv_block = STps->drv_file = 0; in set_location()
3280 return (-EIO); in find_partition()
3290 if (STp->partition == STp->new_partition) in switch_partition()
3292 STps = &(STp->ps[STp->new_partition]); in switch_partition()
3293 if (!STps->last_block_valid) in switch_partition()
3294 STps->last_block_visited = 0; in switch_partition()
3295 return set_location(STp, STps->last_block_visited, STp->new_partition, 1); in switch_partition()
3315 /* Get the number of partitions on the tape. As a side effect reads the
3321 if (STp->ready != ST_READY) in nbr_partitions()
3322 return (-EIO); in nbr_partitions()
3328 result = (-EIO); in nbr_partitions()
3330 result = (STp->buffer)->b_data[MODE_HEADER_LENGTH + in nbr_partitions()
3332 DEBC_printk(STp, "Number of partitions %d.\n", result); in nbr_partitions()
3342 int timeout = STp->long_timeout; in format_medium()
3349 if (STp->immediate) { in format_medium()
3351 timeout = STp->device->request_queue->rq_timeout; in format_medium()
3357 result = STp->buffer->syscall_result; in format_medium()
3362 /* Partition the tape into two partitions if size > 0 or one partition if
3365 The block descriptors are read and written because Sony SDT-7000 does not
3370 Michael Schaefer's Sony SDT-7000 returns two descriptors and the second is
3371 used to set the size of partition 1 (this is what the SCSI-3 standard specifies).
3373 partition size fields is greater than the maximum number of additional partitions
3376 For Seagate DDS drives the page length must be 8 when no partitions is defined
3381 For drives that advertize SCSI-3 or newer, use the SSC-3 methods.
3387 bool scsi3 = STp->device->scsi_level >= SCSI_3, needs_format = false; in partition_tape()
3400 size = -size; in partition_tape()
3404 bp = (STp->buffer)->b_data; in partition_tape()
3409 psd_cnt = (bp[pgo + MP_OFF_PAGE_LENGTH] + 2 - PART_PAGE_FIXED_LENGTH) / 2; in partition_tape()
3424 /* Use units scaling for large partitions if the device in partition_tape()
3444 result = -EINVAL; in partition_tape()
3478 "Formatting tape with two partitions (%i = %d MB).\n", in partition_tape()
3499 result = (-EIO); in partition_tape()
3516 struct scsi_tape *STp = file->private_data; in st_ioctl()
3520 if (mutex_lock_interruptible(&STp->lock)) in st_ioctl()
3521 return -ERESTARTSYS; in st_ioctl()
3524 if (debugging && !STp->in_use) { in st_ioctl()
3526 retval = (-EIO); in st_ioctl()
3530 STm = &(STp->modes[STp->current_mode]); in st_ioctl()
3531 STps = &(STp->ps[STp->partition]); in st_ioctl()
3539 retval = scsi_ioctl_block_when_processing_errors(STp->device, cmd_in, in st_ioctl()
3540 file->f_flags & O_NDELAY); in st_ioctl()
3551 retval = (-EINVAL); in st_ioctl()
3557 retval = (-EFAULT); in st_ioctl()
3564 retval = (-EPERM); in st_ioctl()
3567 if (!STm->defined && in st_ioctl()
3570 retval = (-ENXIO); in st_ioctl()
3574 if (!STp->pos_unknown) { in st_ioctl()
3576 if (STps->eof == ST_FM_HIT) { in st_ioctl()
3579 mtc.mt_count -= 1; in st_ioctl()
3580 if (STps->drv_file >= 0) in st_ioctl()
3581 STps->drv_file += 1; in st_ioctl()
3584 if (STps->drv_file >= 0) in st_ioctl()
3585 STps->drv_file += 1; in st_ioctl()
3592 i = !STp->can_partitions || in st_ioctl()
3593 (STp->new_partition != STp->partition); in st_ioctl()
3607 if (STps->rw == ST_WRITING && in st_ioctl()
3618 STps->rw = ST_IDLE; in st_ioctl()
3634 retval = (-EIO); in st_ioctl()
3639 STp->device->was_reset = 0; in st_ioctl()
3645 STps->rw = ST_IDLE; /* Prevent automatic WEOF and fsf */ in st_ioctl()
3647 if (mtc.mt_op == MTOFFL && STp->door_locked != ST_UNLOCKED) in st_ioctl()
3657 if (!STp->can_partitions || in st_ioctl()
3659 retval = (-EINVAL); in st_ioctl()
3662 if (mtc.mt_count >= STp->nbr_partitions && in st_ioctl()
3663 (STp->nbr_partitions = nbr_partitions(STp)) < 0) { in st_ioctl()
3664 retval = (-EIO); in st_ioctl()
3667 if (mtc.mt_count >= STp->nbr_partitions) { in st_ioctl()
3668 retval = (-EINVAL); in st_ioctl()
3671 STp->new_partition = mtc.mt_count; in st_ioctl()
3677 if (!STp->can_partitions) { in st_ioctl()
3678 retval = (-EINVAL); in st_ioctl()
3692 STp->ps[i].rw = ST_IDLE; in st_ioctl()
3693 STp->ps[i].at_sm = 0; in st_ioctl()
3694 STp->ps[i].last_block_valid = 0; in st_ioctl()
3696 STp->partition = STp->new_partition = 0; in st_ioctl()
3697 STp->nbr_partitions = mtc.mt_count != 0 ? 2 : 1; in st_ioctl()
3698 STps->drv_block = STps->drv_file = 0; in st_ioctl()
3704 i = set_location(STp, mtc.mt_count, STp->new_partition, 0); in st_ioctl()
3705 if (!STp->can_partitions) in st_ioctl()
3706 STp->ps[0].rw = ST_IDLE; in st_ioctl()
3726 if (STp->can_partitions && STp->ready == ST_READY && in st_ioctl()
3738 if (!STm->defined) { in st_ioctl()
3739 retval = (-ENXIO); in st_ioctl()
3746 if (cmd_mtiocget && STp->pos_unknown) { in st_ioctl()
3747 /* flush fails -> modify status accordingly */ in st_ioctl()
3749 STp->pos_unknown = 1; in st_ioctl()
3755 if (STp->can_partitions) { in st_ioctl()
3768 retval = (-EINVAL); in st_ioctl()
3772 mt_status.mt_type = STp->tape_type; in st_ioctl()
3774 ((STp->block_size << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK) | in st_ioctl()
3775 ((STp->density << MT_ST_DENSITY_SHIFT) & MT_ST_DENSITY_MASK); in st_ioctl()
3776 mt_status.mt_blkno = STps->drv_block; in st_ioctl()
3777 mt_status.mt_fileno = STps->drv_file; in st_ioctl()
3778 if (STp->block_size != 0 && mt_status.mt_blkno >= 0) { in st_ioctl()
3779 if (STps->rw == ST_WRITING) in st_ioctl()
3781 (STp->buffer)->buffer_bytes / STp->block_size; in st_ioctl()
3782 else if (STps->rw == ST_READING) in st_ioctl()
3783 mt_status.mt_blkno -= in st_ioctl()
3784 ((STp->buffer)->buffer_bytes + in st_ioctl()
3785 STp->block_size - 1) / STp->block_size; in st_ioctl()
3789 if (STp->drv_write_prot) in st_ioctl()
3797 mt_status.mt_erreg = (STp->recover_reg << MT_ST_SOFTERR_SHIFT); in st_ioctl()
3798 mt_status.mt_resid = STp->partition; in st_ioctl()
3799 if (STps->eof == ST_EOM_OK || STps->eof == ST_EOM_ERROR) in st_ioctl()
3801 else if (STps->eof >= ST_EOM_OK) in st_ioctl()
3803 if (STp->density == 1) in st_ioctl()
3805 else if (STp->density == 2) in st_ioctl()
3807 else if (STp->density == 3) in st_ioctl()
3809 if (STp->ready == ST_READY) in st_ioctl()
3811 if (STp->ready == ST_NO_TAPE) in st_ioctl()
3813 if (STps->at_sm) in st_ioctl()
3815 if (STm->do_async_writes || in st_ioctl()
3816 (STm->do_buffer_writes && STp->block_size != 0) || in st_ioctl()
3817 STp->drv_buffer != 0) in st_ioctl()
3819 if (STp->cleaning_req) in st_ioctl()
3826 STp->recover_reg = 0; /* Clear after read */ in st_ioctl()
3832 retval = (-EINVAL); in st_ioctl()
3843 mutex_unlock(&STp->lock); in st_ioctl()
3850 return -EPERM; in st_ioctl()
3856 retval = scsi_ioctl(STp->device, file->f_mode & FMODE_WRITE, cmd_in, p); in st_ioctl()
3859 STp->rew_at_close = 0; in st_ioctl()
3860 STp->ready = ST_NO_TAPE; in st_ioctl()
3865 mutex_unlock(&STp->lock); in st_ioctl()
3899 tb->frp_segs = 0; in new_tape_buffer()
3900 tb->use_sg = max_sg; in new_tape_buffer()
3901 tb->buffer_size = 0; in new_tape_buffer()
3903 tb->reserved_pages = kcalloc(max_sg, sizeof(struct page *), in new_tape_buffer()
3905 if (!tb->reserved_pages) { in new_tape_buffer()
3922 if (new_size <= STbuffer->buffer_size) in enlarge_buffer()
3925 if (STbuffer->buffer_size <= PAGE_SIZE) in enlarge_buffer()
3928 max_segs = STbuffer->use_sg; in enlarge_buffer()
3932 if (STbuffer->cleared) in enlarge_buffer()
3935 if (STbuffer->frp_segs) { in enlarge_buffer()
3936 order = STbuffer->reserved_page_order; in enlarge_buffer()
3944 STbuffer->reserved_page_order = order; in enlarge_buffer()
3953 for (segs = STbuffer->frp_segs, got = STbuffer->buffer_size; in enlarge_buffer()
3959 DEB(STbuffer->buffer_size = got); in enlarge_buffer()
3964 STbuffer->frp_segs += 1; in enlarge_buffer()
3966 STbuffer->buffer_size = got; in enlarge_buffer()
3967 STbuffer->reserved_pages[segs] = page; in enlarge_buffer()
3970 STbuffer->b_data = page_address(STbuffer->reserved_pages[0]); in enlarge_buffer()
3981 for (i=0; i < st_bp->frp_segs; i++) in clear_buffer()
3982 memset(page_address(st_bp->reserved_pages[i]), 0, in clear_buffer()
3983 PAGE_SIZE << st_bp->reserved_page_order); in clear_buffer()
3984 st_bp->cleared = 1; in clear_buffer()
3991 int i, order = STbuffer->reserved_page_order; in normalize_buffer()
3993 for (i = 0; i < STbuffer->frp_segs; i++) { in normalize_buffer()
3994 __free_pages(STbuffer->reserved_pages[i], order); in normalize_buffer()
3995 STbuffer->buffer_size -= (PAGE_SIZE << order); in normalize_buffer()
3997 STbuffer->frp_segs = 0; in normalize_buffer()
3998 STbuffer->sg_segs = 0; in normalize_buffer()
3999 STbuffer->reserved_page_order = 0; in normalize_buffer()
4000 STbuffer->map_data.offset = 0; in normalize_buffer()
4009 int length = PAGE_SIZE << st_bp->reserved_page_order; in append_to_buffer()
4011 for (i = 0, offset = st_bp->buffer_bytes; in append_to_buffer()
4012 i < st_bp->frp_segs && offset >= length; i++) in append_to_buffer()
4013 offset -= length; in append_to_buffer()
4014 if (i == st_bp->frp_segs) { /* Should never happen */ in append_to_buffer()
4016 return (-EIO); in append_to_buffer()
4018 for (; i < st_bp->frp_segs && do_count > 0; i++) { in append_to_buffer()
4019 struct page *page = st_bp->reserved_pages[i]; in append_to_buffer()
4020 cnt = length - offset < do_count ? length - offset : do_count; in append_to_buffer()
4023 return (-EFAULT); in append_to_buffer()
4024 do_count -= cnt; in append_to_buffer()
4025 st_bp->buffer_bytes += cnt; in append_to_buffer()
4030 return (-EIO); in append_to_buffer()
4041 int length = PAGE_SIZE << st_bp->reserved_page_order; in from_buffer()
4043 for (i = 0, offset = st_bp->read_pointer; in from_buffer()
4044 i < st_bp->frp_segs && offset >= length; i++) in from_buffer()
4045 offset -= length; in from_buffer()
4046 if (i == st_bp->frp_segs) { /* Should never happen */ in from_buffer()
4048 return (-EIO); in from_buffer()
4050 for (; i < st_bp->frp_segs && do_count > 0; i++) { in from_buffer()
4051 struct page *page = st_bp->reserved_pages[i]; in from_buffer()
4052 cnt = length - offset < do_count ? length - offset : do_count; in from_buffer()
4055 return (-EFAULT); in from_buffer()
4056 do_count -= cnt; in from_buffer()
4057 st_bp->buffer_bytes -= cnt; in from_buffer()
4058 st_bp->read_pointer += cnt; in from_buffer()
4063 return (-EIO); in from_buffer()
4074 int length = PAGE_SIZE << st_bp->reserved_page_order; in move_buffer_data()
4079 total=st_bp->buffer_bytes - offset; in move_buffer_data()
4080 for (src_seg=0; src_seg < st_bp->frp_segs; src_seg++) { in move_buffer_data()
4084 offset -= length; in move_buffer_data()
4087 st_bp->buffer_bytes = st_bp->read_pointer = total; in move_buffer_data()
4089 struct page *dpage = st_bp->reserved_pages[dst_seg]; in move_buffer_data()
4090 struct page *spage = st_bp->reserved_pages[src_seg]; in move_buffer_data()
4092 count = min(length - dst_offset, length - src_offset); in move_buffer_data()
4105 total -= count; in move_buffer_data()
4186 struct st_modedef *STm = &(tape->modes[mode]); in create_one_cdev()
4188 int dev_num = tape->index; in create_one_cdev()
4195 error = -ENOMEM; in create_one_cdev()
4198 cdev->owner = THIS_MODULE; in create_one_cdev()
4199 cdev->ops = &st_fops; in create_one_cdev()
4200 STm->cdevs[rew] = cdev; in create_one_cdev()
4204 pr_err("st%d: Can't add %s-rewind mode %d\n", dev_num, in create_one_cdev()
4210 i = mode << (4 - ST_NBR_MODE_BITS); in create_one_cdev()
4212 tape->name, st_formats[i]); in create_one_cdev()
4214 dev = device_create(&st_sysfs_class, &tape->device->sdev_gendev, in create_one_cdev()
4215 cdev_devno, &tape->modes[mode], "%s", name); in create_one_cdev()
4222 STm->devs[rew] = dev; in create_one_cdev()
4226 cdev_del(STm->cdevs[rew]); in create_one_cdev()
4228 STm->cdevs[rew] = NULL; in create_one_cdev()
4229 STm->devs[rew] = NULL; in create_one_cdev()
4245 return sysfs_create_link(&tape->device->sdev_gendev.kobj, in create_cdevs()
4246 &tape->modes[0].devs[0]->kobj, "tape"); in create_cdevs()
4252 sysfs_remove_link(&tape->device->sdev_gendev.kobj, "tape"); in remove_cdevs()
4254 struct st_modedef *STm = &(tape->modes[mode]); in remove_cdevs()
4256 if (STm->cdevs[rew]) in remove_cdevs()
4257 cdev_del(STm->cdevs[rew]); in remove_cdevs()
4258 if (STm->devs[rew]) in remove_cdevs()
4259 device_unregister(STm->devs[rew]); in remove_cdevs()
4273 if (SDp->type != TYPE_TAPE) in st_probe()
4274 return -ENODEV; in st_probe()
4279 "please mail to linux-scsi@vger.kernel.org.\n"); in st_probe()
4280 return -ENODEV; in st_probe()
4284 i = queue_max_segments(SDp->request_queue); in st_probe()
4301 kref_init(&tpnt->kref); in st_probe()
4303 tpnt->device = SDp; in st_probe()
4304 if (SDp->scsi_level <= 2) in st_probe()
4305 tpnt->tape_type = MT_ISSCSI1; in st_probe()
4307 tpnt->tape_type = MT_ISSCSI2; in st_probe()
4309 tpnt->buffer = buffer; in st_probe()
4310 tpnt->buffer->last_SRpnt = NULL; in st_probe()
4312 tpnt->inited = 0; in st_probe()
4313 tpnt->dirty = 0; in st_probe()
4314 tpnt->in_use = 0; in st_probe()
4315 tpnt->drv_buffer = 1; /* Try buffering if no mode sense */ in st_probe()
4316 tpnt->use_pf = (SDp->scsi_level >= SCSI_2); in st_probe()
4317 tpnt->density = 0; in st_probe()
4318 tpnt->do_auto_lock = ST_AUTO_LOCK; in st_probe()
4319 tpnt->can_bsr = (SDp->scsi_level > 2 ? 1 : ST_IN_FILE_POS); /* BSR mandatory in SCSI3 */ in st_probe()
4320 tpnt->can_partitions = 0; in st_probe()
4321 tpnt->two_fm = ST_TWO_FM; in st_probe()
4322 tpnt->fast_mteom = ST_FAST_MTEOM; in st_probe()
4323 tpnt->scsi2_logical = ST_SCSI2LOGICAL; in st_probe()
4324 tpnt->sili = ST_SILI; in st_probe()
4325 tpnt->immediate = ST_NOWAIT; in st_probe()
4326 tpnt->immediate_filemark = 0; in st_probe()
4327 tpnt->default_drvbuffer = 0xff; /* No forced buffering */ in st_probe()
4328 tpnt->partition = 0; in st_probe()
4329 tpnt->new_partition = 0; in st_probe()
4330 tpnt->nbr_partitions = 0; in st_probe()
4331 blk_queue_rq_timeout(tpnt->device->request_queue, ST_TIMEOUT); in st_probe()
4332 tpnt->long_timeout = ST_LONG_TIMEOUT; in st_probe()
4333 tpnt->try_dio = try_direct_io; in st_probe()
4334 tpnt->first_tur = 1; in st_probe()
4337 STm = &(tpnt->modes[i]); in st_probe()
4338 STm->defined = 0; in st_probe()
4339 STm->sysv = ST_SYSV; in st_probe()
4340 STm->defaults_for_writes = 0; in st_probe()
4341 STm->do_async_writes = ST_ASYNC_WRITES; in st_probe()
4342 STm->do_buffer_writes = ST_BUFFER_WRITES; in st_probe()
4343 STm->do_read_ahead = ST_READ_AHEAD; in st_probe()
4344 STm->default_compression = ST_DONT_TOUCH; in st_probe()
4345 STm->default_blksize = (-1); /* No forced size */ in st_probe()
4346 STm->default_density = (-1); /* No forced density */ in st_probe()
4347 STm->tape = tpnt; in st_probe()
4351 STps = &(tpnt->ps[i]); in st_probe()
4352 STps->rw = ST_IDLE; in st_probe()
4353 STps->eof = ST_NOEOF; in st_probe()
4354 STps->at_sm = 0; in st_probe()
4355 STps->last_block_valid = 0; in st_probe()
4356 STps->drv_block = (-1); in st_probe()
4357 STps->drv_file = (-1); in st_probe()
4360 tpnt->current_mode = 0; in st_probe()
4361 tpnt->modes[0].defined = 1; in st_probe()
4363 tpnt->density_changed = tpnt->compression_changed = in st_probe()
4364 tpnt->blksize_changed = 0; in st_probe()
4365 mutex_init(&tpnt->lock); in st_probe()
4376 tpnt->index = error; in st_probe()
4377 sprintf(tpnt->name, "st%d", tpnt->index); in st_probe()
4378 tpnt->stats = kzalloc(sizeof(struct scsi_tape_stats), GFP_KERNEL); in st_probe()
4379 if (tpnt->stats == NULL) { in st_probe()
4394 "Attached scsi tape %s\n", tpnt->name); in st_probe()
4396 tpnt->name, tpnt->try_dio ? "yes" : "no", in st_probe()
4397 queue_dma_alignment(SDp->request_queue) + 1); in st_probe()
4403 kfree(tpnt->stats); in st_probe()
4406 idr_remove(&st_index_idr, tpnt->index); in st_probe()
4414 return -ENODEV; in st_probe()
4421 int index = tpnt->index; in st_remove()
4427 kref_put(&tpnt->kref, scsi_tape_release); in st_remove()
4436 * scsi_tape_release - Called to free the Scsi_Tape structure
4448 tpnt->device = NULL; in scsi_tape_release()
4450 if (tpnt->buffer) { in scsi_tape_release()
4451 normalize_buffer(tpnt->buffer); in scsi_tape_release()
4452 kfree(tpnt->buffer->reserved_pages); in scsi_tape_release()
4453 kfree(tpnt->buffer); in scsi_tape_release()
4456 kfree(tpnt->stats); in scsi_tape_release()
4523 /* The sysfs driver interface. Read-only at the moment */
4554 * other values have -EINVAL returned if they are passed in. in debug_flag_store()
4565 return -EINVAL; in debug_flag_store()
4594 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->defined); in defined_show()
4606 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_blksize); in default_blksize_show()
4619 fmt = STm->default_density >= 0 ? "0x%02x\n" : "%d\n"; in default_density_show()
4620 l = snprintf(buf, PAGE_SIZE, fmt, STm->default_density); in default_density_show()
4632 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_compression - 1); in default_compression_show()
4641 struct scsi_tape *STp = STm->tape; in options_show()
4645 options = STm->do_buffer_writes ? MT_ST_BUFFER_WRITES : 0; in options_show()
4646 options |= STm->do_async_writes ? MT_ST_ASYNC_WRITES : 0; in options_show()
4647 options |= STm->do_read_ahead ? MT_ST_READ_AHEAD : 0; in options_show()
4649 options |= STp->two_fm ? MT_ST_TWO_FM : 0; in options_show()
4650 options |= STp->fast_mteom ? MT_ST_FAST_MTEOM : 0; in options_show()
4651 options |= STm->defaults_for_writes ? MT_ST_DEF_WRITES : 0; in options_show()
4652 options |= STp->can_bsr ? MT_ST_CAN_BSR : 0; in options_show()
4653 options |= STp->omit_blklims ? MT_ST_NO_BLKLIMS : 0; in options_show()
4654 options |= STp->can_partitions ? MT_ST_CAN_PARTITIONS : 0; in options_show()
4655 options |= STp->scsi2_logical ? MT_ST_SCSI2LOGICAL : 0; in options_show()
4656 options |= STm->sysv ? MT_ST_SYSV : 0; in options_show()
4657 options |= STp->immediate ? MT_ST_NOWAIT : 0; in options_show()
4658 options |= STp->immediate_filemark ? MT_ST_NOWAIT_EOF : 0; in options_show()
4659 options |= STp->sili ? MT_ST_SILI : 0; in options_show()
4669 * read_cnt_show - return read count - count of reads made from tape drive
4680 (long long)atomic64_read(&STm->tape->stats->read_cnt)); in read_cnt_show()
4685 * read_byte_cnt_show - return read byte count - tape drives
4698 (long long)atomic64_read(&STm->tape->stats->read_byte_cnt)); in read_byte_cnt_show()
4703 * read_ns_show - return read ns - overall time spent waiting on reads in ns.
4714 (long long)atomic64_read(&STm->tape->stats->tot_read_time)); in read_ns_show()
4719 * write_cnt_show - write count - number of user calls
4731 (long long)atomic64_read(&STm->tape->stats->write_cnt)); in write_cnt_show()
4736 * write_byte_cnt_show - write byte count - raw count of
4748 (long long)atomic64_read(&STm->tape->stats->write_byte_cnt)); in write_byte_cnt_show()
4753 * write_ns_show - write ns - number of nanoseconds waiting on write
4765 (long long)atomic64_read(&STm->tape->stats->tot_write_time)); in write_ns_show()
4770 * in_flight_show - number of I/Os currently in flight -
4783 (long long)atomic64_read(&STm->tape->stats->in_flight)); in in_flight_show()
4788 * io_ns_show - io wait ns - this is the number of ns spent
4803 (long long)atomic64_read(&STm->tape->stats->tot_io_time)); in io_ns_show()
4808 * other_cnt_show - other io count - this is the number of
4822 (long long)atomic64_read(&STm->tape->stats->other_cnt)); in other_cnt_show()
4827 * resid_cnt_show - A count of the number of times we get a residual
4828 * count - this should indicate someone issuing reads larger than the
4840 (long long)atomic64_read(&STm->tape->stats->resid_cnt)); in resid_cnt_show()
4887 unsigned long end = (uaddr + count + PAGE_SIZE - 1) >> PAGE_SHIFT; in sgl_map_user_pages()
4889 const int nr_pages = end - start; in sgl_map_user_pages()
4892 struct rq_map_data *mdata = &STbp->map_data; in sgl_map_user_pages()
4896 return -EINVAL; in sgl_map_user_pages()
4900 return -ENOMEM; in sgl_map_user_pages()
4908 return -ENOMEM; in sgl_map_user_pages()
4926 mdata->offset = uaddr & ~PAGE_MASK; in sgl_map_user_pages()
4927 STbp->mapped_pages = pages; in sgl_map_user_pages()
4945 unpin_user_pages_dirty_lock(STbp->mapped_pages, nr_pages, dirtied); in sgl_unmap_user_pages()
4947 kfree(STbp->mapped_pages); in sgl_unmap_user_pages()
4948 STbp->mapped_pages = NULL; in sgl_unmap_user_pages()