Lines Matching +full:usb +full:- +full:sdp
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"}, \
239 {"OnStream", "USB", "", "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 */
296 static char * st_incompatible(struct scsi_device* SDp) in st_incompatible() argument
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()
418 STp->pos_unknown |= STp->device->was_reset; in st_chk_result()
420 if (cmdstatp->have_sense && in st_chk_result()
423 && SRpnt->cmd[0] != WRITE_6 in st_chk_result()
424 && SRpnt->cmd[0] != WRITE_FILEMARKS in st_chk_result()
427 STp->recover_count++; in st_chk_result()
428 STp->recover_reg++; in st_chk_result()
432 if (SRpnt->cmd[0] == READ_6) in st_chk_result()
434 else if (SRpnt->cmd[0] == WRITE_6) in st_chk_result()
440 stp, STp->recover_count); in st_chk_result()
443 if (cmdstatp->flags == 0) in st_chk_result()
446 return (-EIO); in st_chk_result()
455 streq->stp = stp; in st_allocate_request()
460 stp->buffer->syscall_result = -EINTR; in st_allocate_request()
462 stp->buffer->syscall_result = -EBUSY; in st_allocate_request()
479 if (scmd->cmnd[0] == WRITE_6) { in st_do_stats()
480 now = ktime_sub(now, STp->stats->write_time); in st_do_stats()
481 atomic64_add(ktime_to_ns(now), &STp->stats->tot_write_time); in st_do_stats()
482 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
483 atomic64_inc(&STp->stats->write_cnt); in st_do_stats()
484 if (scmd->result) { in st_do_stats()
485 atomic64_add(atomic_read(&STp->stats->last_write_size) in st_do_stats()
486 - STp->buffer->cmdstat.residual, in st_do_stats()
487 &STp->stats->write_byte_cnt); in st_do_stats()
488 if (STp->buffer->cmdstat.residual > 0) in st_do_stats()
489 atomic64_inc(&STp->stats->resid_cnt); in st_do_stats()
491 atomic64_add(atomic_read(&STp->stats->last_write_size), in st_do_stats()
492 &STp->stats->write_byte_cnt); in st_do_stats()
493 } else if (scmd->cmnd[0] == READ_6) { in st_do_stats()
494 now = ktime_sub(now, STp->stats->read_time); in st_do_stats()
495 atomic64_add(ktime_to_ns(now), &STp->stats->tot_read_time); in st_do_stats()
496 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
497 atomic64_inc(&STp->stats->read_cnt); in st_do_stats()
498 if (scmd->result) { in st_do_stats()
499 atomic64_add(atomic_read(&STp->stats->last_read_size) in st_do_stats()
500 - STp->buffer->cmdstat.residual, in st_do_stats()
501 &STp->stats->read_byte_cnt); in st_do_stats()
502 if (STp->buffer->cmdstat.residual > 0) in st_do_stats()
503 atomic64_inc(&STp->stats->resid_cnt); in st_do_stats()
505 atomic64_add(atomic_read(&STp->stats->last_read_size), in st_do_stats()
506 &STp->stats->read_byte_cnt); in st_do_stats()
508 now = ktime_sub(now, STp->stats->other_time); in st_do_stats()
509 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
510 atomic64_inc(&STp->stats->other_cnt); in st_do_stats()
512 atomic64_dec(&STp->stats->in_flight); in st_do_stats()
519 struct st_request *SRpnt = req->end_io_data; in st_scsi_execute_end()
520 struct scsi_tape *STp = SRpnt->stp; in st_scsi_execute_end()
523 STp->buffer->cmdstat.midlevel_result = SRpnt->result = scmd->result; in st_scsi_execute_end()
524 STp->buffer->cmdstat.residual = scmd->resid_len; in st_scsi_execute_end()
528 tmp = SRpnt->bio; in st_scsi_execute_end()
529 if (scmd->sense_len) in st_scsi_execute_end()
530 memcpy(SRpnt->sense, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); in st_scsi_execute_end()
531 if (SRpnt->waiting) in st_scsi_execute_end()
532 complete(SRpnt->waiting); in st_scsi_execute_end()
544 struct rq_map_data *mdata = &SRpnt->stp->buffer->map_data; in st_scsi_execute()
546 struct scsi_tape *STp = SRpnt->stp; in st_scsi_execute()
549 req = scsi_alloc_request(SRpnt->stp->device->request_queue, in st_scsi_execute()
555 req->rq_flags |= RQF_QUIET; in st_scsi_execute()
557 mdata->null_mapped = 1; in st_scsi_execute()
560 err = blk_rq_map_user(req->q, req, mdata, NULL, bufflen, in st_scsi_execute()
568 atomic64_inc(&STp->stats->in_flight); in st_scsi_execute()
570 atomic_set(&STp->stats->last_write_size, bufflen); in st_scsi_execute()
571 STp->stats->write_time = ktime_get(); in st_scsi_execute()
573 atomic_set(&STp->stats->last_read_size, bufflen); in st_scsi_execute()
574 STp->stats->read_time = ktime_get(); in st_scsi_execute()
576 STp->stats->other_time = ktime_get(); in st_scsi_execute()
579 SRpnt->bio = req->bio; in st_scsi_execute()
580 scmd->cmd_len = COMMAND_SIZE(cmd[0]); in st_scsi_execute()
581 memcpy(scmd->cmnd, cmd, scmd->cmd_len); in st_scsi_execute()
582 req->timeout = timeout; in st_scsi_execute()
583 scmd->allowed = retries; in st_scsi_execute()
584 req->end_io = st_scsi_execute_end; in st_scsi_execute()
585 req->end_io_data = SRpnt; in st_scsi_execute()
599 struct rq_map_data *mdata = &STp->buffer->map_data; in st_do_scsi()
603 if (!do_wait && ((STp->buffer)->last_SRpnt)) { in st_do_scsi()
607 (STp->buffer)->syscall_result = (-EINTR); in st_do_scsi()
609 (STp->buffer)->syscall_result = (-EBUSY); in st_do_scsi()
622 (STp->buffer)->last_SRpnt = SRpnt; in st_do_scsi()
624 waiting = &STp->wait; in st_do_scsi()
626 SRpnt->waiting = waiting; in st_do_scsi()
628 if (STp->buffer->do_dio) { in st_do_scsi()
629 mdata->page_order = 0; in st_do_scsi()
630 mdata->nr_entries = STp->buffer->sg_segs; in st_do_scsi()
631 mdata->pages = STp->buffer->mapped_pages; in st_do_scsi()
633 mdata->page_order = STp->buffer->reserved_page_order; in st_do_scsi()
634 mdata->nr_entries = in st_do_scsi()
635 DIV_ROUND_UP(bytes, PAGE_SIZE << mdata->page_order); in st_do_scsi()
636 mdata->pages = STp->buffer->reserved_pages; in st_do_scsi()
637 mdata->offset = 0; in st_do_scsi()
640 memcpy(SRpnt->cmd, cmd, sizeof(SRpnt->cmd)); in st_do_scsi()
641 STp->buffer->cmdstat.have_sense = 0; in st_do_scsi()
642 STp->buffer->syscall_result = 0; in st_do_scsi()
648 (STp->buffer)->syscall_result = (-EBUSY); in st_do_scsi()
649 (STp->buffer)->last_SRpnt = NULL; in st_do_scsi()
652 SRpnt->waiting = NULL; in st_do_scsi()
653 (STp->buffer)->syscall_result = st_chk_result(STp, SRpnt); in st_do_scsi()
660 /* Handle the write-behind checking (waits for completion). Returns -ENOSPC if
661 write has been correct but EOM early warning reached, -EIO if write ended in
672 STbuffer = STp->buffer; in write_behind_check()
673 if (!STbuffer->writing) in write_behind_check()
677 if (STp->write_pending) in write_behind_check()
678 STp->nbr_waits++; in write_behind_check()
680 STp->nbr_finished++; in write_behind_check()
683 wait_for_completion(&(STp->wait)); in write_behind_check()
684 SRpnt = STbuffer->last_SRpnt; in write_behind_check()
685 STbuffer->last_SRpnt = NULL; in write_behind_check()
686 SRpnt->waiting = NULL; in write_behind_check()
688 (STp->buffer)->syscall_result = st_chk_result(STp, SRpnt); in write_behind_check()
691 STbuffer->buffer_bytes -= STbuffer->writing; in write_behind_check()
692 STps = &(STp->ps[STp->partition]); in write_behind_check()
693 if (STps->drv_block >= 0) { in write_behind_check()
694 if (STp->block_size == 0) in write_behind_check()
695 STps->drv_block++; in write_behind_check()
697 STps->drv_block += STbuffer->writing / STp->block_size; in write_behind_check()
700 cmdstatp = &STbuffer->cmdstat; in write_behind_check()
701 if (STbuffer->syscall_result) { in write_behind_check()
702 retval = -EIO; in write_behind_check()
703 if (cmdstatp->have_sense && !cmdstatp->deferred && in write_behind_check()
704 (cmdstatp->flags & SENSE_EOM) && in write_behind_check()
705 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in write_behind_check()
706 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR)) { in write_behind_check()
707 /* EOM at write-behind, has all data been written? */ in write_behind_check()
708 if (!cmdstatp->remainder_valid || in write_behind_check()
709 cmdstatp->uremainder64 == 0) in write_behind_check()
710 retval = -ENOSPC; in write_behind_check()
712 if (retval == -EIO) in write_behind_check()
713 STps->drv_block = -1; in write_behind_check()
715 STbuffer->writing = 0; in write_behind_check()
720 STbuffer->cmdstat.midlevel_result, retval);) /* end DEB */ in write_behind_check()
739 cmd[2] = cmd[3] = cmd[4] = 0xff; /* -1 filemarks */ in cross_eof()
746 STp->device->request_queue->rq_timeout, in cross_eof()
749 return (STp->buffer)->syscall_result; in cross_eof()
754 if ((STp->buffer)->cmdstat.midlevel_result != 0) in cross_eof()
759 return (STp->buffer)->syscall_result; in cross_eof()
777 if (STp->dirty == 1) { in st_flush_write_buffer()
779 transfer = STp->buffer->buffer_bytes; in st_flush_write_buffer()
785 blks = transfer / STp->block_size; in st_flush_write_buffer()
791 STp->device->request_queue->rq_timeout, in st_flush_write_buffer()
794 return (STp->buffer)->syscall_result; in st_flush_write_buffer()
796 STps = &(STp->ps[STp->partition]); in st_flush_write_buffer()
797 if ((STp->buffer)->syscall_result != 0) { in st_flush_write_buffer()
798 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush_write_buffer()
800 if (cmdstatp->have_sense && !cmdstatp->deferred && in st_flush_write_buffer()
801 (cmdstatp->flags & SENSE_EOM) && in st_flush_write_buffer()
802 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_flush_write_buffer()
803 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) && in st_flush_write_buffer()
804 (!cmdstatp->remainder_valid || in st_flush_write_buffer()
805 cmdstatp->uremainder64 == 0)) { /* All written at EOM early warning */ in st_flush_write_buffer()
806 STp->dirty = 0; in st_flush_write_buffer()
807 (STp->buffer)->buffer_bytes = 0; in st_flush_write_buffer()
808 if (STps->drv_block >= 0) in st_flush_write_buffer()
809 STps->drv_block += blks; in st_flush_write_buffer()
810 result = (-ENOSPC); in st_flush_write_buffer()
813 STps->drv_block = (-1); in st_flush_write_buffer()
814 result = (-EIO); in st_flush_write_buffer()
817 if (STps->drv_block >= 0) in st_flush_write_buffer()
818 STps->drv_block += blks; in st_flush_write_buffer()
819 STp->dirty = 0; in st_flush_write_buffer()
820 (STp->buffer)->buffer_bytes = 0; in st_flush_write_buffer()
840 if (STp->pos_unknown) in flush_buffer()
841 return (-EIO); in flush_buffer()
843 if (STp->ready != ST_READY) in flush_buffer()
845 STps = &(STp->ps[STp->partition]); in flush_buffer()
846 if (STps->rw == ST_WRITING) /* Writing */ in flush_buffer()
849 if (STp->block_size == 0) in flush_buffer()
852 backspace = ((STp->buffer)->buffer_bytes + in flush_buffer()
853 (STp->buffer)->read_pointer) / STp->block_size - in flush_buffer()
854 ((STp->buffer)->read_pointer + STp->block_size - 1) / in flush_buffer()
855 STp->block_size; in flush_buffer()
856 (STp->buffer)->buffer_bytes = 0; in flush_buffer()
857 (STp->buffer)->read_pointer = 0; in flush_buffer()
860 if (STps->eof == ST_FM_HIT) { in flush_buffer()
863 STps->eof = ST_NOEOF; in flush_buffer()
865 if (STps->drv_file >= 0) in flush_buffer()
866 STps->drv_file++; in flush_buffer()
867 STps->drv_block = 0; in flush_buffer()
872 } else if (STps->eof == ST_FM_HIT) { in flush_buffer()
873 if (STps->drv_file >= 0) in flush_buffer()
874 STps->drv_file++; in flush_buffer()
875 STps->drv_block = 0; in flush_buffer()
876 STps->eof = ST_NOEOF; in flush_buffer()
888 if (!STp->density_changed && in set_mode_densblk()
889 STm->default_density >= 0 && in set_mode_densblk()
890 STm->default_density != STp->density) { in set_mode_densblk()
891 arg = STm->default_density; in set_mode_densblk()
894 arg = STp->density; in set_mode_densblk()
896 if (!STp->blksize_changed && in set_mode_densblk()
897 STm->default_blksize >= 0 && in set_mode_densblk()
898 STm->default_blksize != STp->block_size) { in set_mode_densblk()
899 arg |= STm->default_blksize; in set_mode_densblk()
902 arg |= STp->block_size; in set_mode_densblk()
908 STm->default_blksize, STm->default_density); in set_mode_densblk()
910 return (-EINVAL); in set_mode_densblk()
923 retval = scsi_set_medium_removal(STp->device, in do_door_lock()
926 STp->door_locked = do_lock ? ST_LOCKED_EXPLICIT : ST_UNLOCKED; in do_door_lock()
928 STp->door_locked = ST_LOCK_FAILS; in do_door_lock()
939 STp->pos_unknown = 0; in reset_state()
941 STps = &(STp->ps[i]); in reset_state()
942 STps->rw = ST_IDLE; in reset_state()
943 STps->eof = ST_NOEOF; in reset_state()
944 STps->at_sm = 0; in reset_state()
945 STps->last_block_valid = 0; in reset_state()
946 STps->drv_block = -1; in reset_state()
947 STps->drv_file = -1; in reset_state()
949 if (STp->can_partitions) { in reset_state()
950 STp->partition = find_partition(STp); in reset_state()
951 if (STp->partition < 0) in reset_state()
952 STp->partition = 0; in reset_state()
953 STp->new_partition = STp->partition; in reset_state()
972 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in test_ready()
980 STp->long_timeout, MAX_READY_RETRIES, 1); in test_ready()
983 retval = (STp->buffer)->syscall_result; in test_ready()
987 if (cmdstatp->have_sense) { in test_ready()
989 scode = cmdstatp->sense_hdr.sense_key; in test_ready()
998 retval = (-EIO); in test_ready()
1006 retval = (-EINTR); in test_ready()
1013 if ((STp->device)->scsi_level >= SCSI_2 && in test_ready()
1014 cmdstatp->sense_hdr.asc == 0x3a) /* Check ASC */ in test_ready()
1023 retval = (STp->buffer)->syscall_result; in test_ready()
1044 unsigned short st_flags = filp->f_flags; in check_tape()
1051 STp->ready = ST_READY; in check_tape()
1053 if (mode != STp->current_mode) { in check_tape()
1055 STp->current_mode, mode); in check_tape()
1057 STp->current_mode = mode; in check_tape()
1059 STm = &(STp->modes[STp->current_mode]); in check_tape()
1061 saved_cleaning = STp->cleaning_req; in check_tape()
1062 STp->cleaning_req = 0; in check_tape()
1064 do_wait = ((filp->f_flags & O_NONBLOCK) == 0); in check_tape()
1071 STp->pos_unknown = 0; in check_tape()
1072 STp->partition = STp->new_partition = 0; in check_tape()
1073 if (STp->can_partitions) in check_tape()
1074 STp->nbr_partitions = 1; /* This guess will be updated later in check_tape()
1077 STps = &(STp->ps[i]); in check_tape()
1078 STps->rw = ST_IDLE; in check_tape()
1079 STps->eof = ST_NOEOF; in check_tape()
1080 STps->at_sm = 0; in check_tape()
1081 STps->last_block_valid = 0; in check_tape()
1082 STps->drv_block = 0; in check_tape()
1083 STps->drv_file = 0; in check_tape()
1088 STp->cleaning_req |= saved_cleaning; in check_tape()
1092 STp->ready = ST_NO_TAPE; in check_tape()
1094 STp->ready = ST_NOT_READY; in check_tape()
1096 STp->density = 0; /* Clear the erroneous "residue" */ in check_tape()
1097 STp->write_prot = 0; in check_tape()
1098 STp->block_size = 0; in check_tape()
1099 STp->ps[0].drv_file = STp->ps[0].drv_block = (-1); in check_tape()
1100 STp->partition = STp->new_partition = 0; in check_tape()
1101 STp->door_locked = ST_UNLOCKED; in check_tape()
1106 if (STp->omit_blklims) in check_tape()
1107 STp->min_block = STp->max_block = (-1); in check_tape()
1113 STp->device->request_queue->rq_timeout, in check_tape()
1116 retval = (STp->buffer)->syscall_result; in check_tape()
1120 if (!SRpnt->result && !STp->buffer->cmdstat.have_sense) { in check_tape()
1121 STp->max_block = ((STp->buffer)->b_data[1] << 16) | in check_tape()
1122 ((STp->buffer)->b_data[2] << 8) | (STp->buffer)->b_data[3]; in check_tape()
1123 STp->min_block = ((STp->buffer)->b_data[4] << 8) | in check_tape()
1124 (STp->buffer)->b_data[5]; in check_tape()
1125 if ( DEB( debugging || ) !STp->inited) in check_tape()
1127 "Block limits %d - %d bytes.\n", in check_tape()
1128 STp->min_block, STp->max_block); in check_tape()
1130 STp->min_block = STp->max_block = (-1); in check_tape()
1140 STp->device->request_queue->rq_timeout, in check_tape()
1143 retval = (STp->buffer)->syscall_result; in check_tape()
1147 if ((STp->buffer)->syscall_result != 0) { in check_tape()
1149 STp->block_size = ST_DEFAULT_BLOCK; /* Educated guess (?) */ in check_tape()
1150 (STp->buffer)->syscall_result = 0; /* Prevent error propagation */ in check_tape()
1151 STp->drv_write_prot = 0; in check_tape()
1155 (STp->buffer)->b_data[0], in check_tape()
1156 (STp->buffer)->b_data[1], in check_tape()
1157 (STp->buffer)->b_data[2], in check_tape()
1158 (STp->buffer)->b_data[3]); in check_tape()
1160 if ((STp->buffer)->b_data[3] >= 8) { in check_tape()
1161 STp->drv_buffer = ((STp->buffer)->b_data[2] >> 4) & 7; in check_tape()
1162 STp->density = (STp->buffer)->b_data[4]; in check_tape()
1163 STp->block_size = (STp->buffer)->b_data[9] * 65536 + in check_tape()
1164 (STp->buffer)->b_data[10] * 256 + (STp->buffer)->b_data[11]; in check_tape()
1167 STp->density, in check_tape()
1168 (STp->buffer)->b_data[5] * 65536 + in check_tape()
1169 (STp->buffer)->b_data[6] * 256 + in check_tape()
1170 (STp->buffer)->b_data[7], in check_tape()
1171 STp->drv_buffer); in check_tape()
1173 STp->drv_write_prot = ((STp->buffer)->b_data[2] & 0x80) != 0; in check_tape()
1174 if (!STp->drv_buffer && STp->immediate_filemark) { in check_tape()
1176 "non-buffered tape: disabling " in check_tape()
1178 STp->immediate_filemark = 0; in check_tape()
1183 STp->inited = 1; in check_tape()
1185 if (STp->block_size > 0) in check_tape()
1186 (STp->buffer)->buffer_blocks = in check_tape()
1187 (STp->buffer)->buffer_size / STp->block_size; in check_tape()
1189 (STp->buffer)->buffer_blocks = 1; in check_tape()
1190 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in check_tape()
1193 STp->block_size, (STp->buffer)->buffer_size, in check_tape()
1194 (STp->buffer)->buffer_blocks); in check_tape()
1196 if (STp->drv_write_prot) { in check_tape()
1197 STp->write_prot = 1; in check_tape()
1204 retval = (-EROFS); in check_tape()
1209 if (STp->can_partitions && STp->nbr_partitions < 1) { in check_tape()
1214 if ((STp->partition = find_partition(STp)) < 0) { in check_tape()
1215 retval = STp->partition; in check_tape()
1218 STp->new_partition = STp->partition; in check_tape()
1219 STp->nbr_partitions = 1; /* This guess will be updated when necessary */ in check_tape()
1223 STp->density_changed = STp->blksize_changed = 0; in check_tape()
1224 STp->compression_changed = 0; in check_tape()
1225 if (!(STm->defaults_for_writes) && in check_tape()
1229 if (STp->default_drvbuffer != 0xff) { in check_tape()
1230 if (st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer)) in check_tape()
1234 STp->default_drvbuffer); in check_tape()
1249 int i, retval = (-EIO); in st_open()
1260 filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE); in st_open()
1263 return -ENXIO; in st_open()
1266 filp->private_data = STp; in st_open()
1269 if (STp->in_use) { in st_open()
1273 return (-EBUSY); in st_open()
1276 STp->in_use = 1; in st_open()
1278 STp->rew_at_close = STp->autorew_dev = (iminor(inode) & 0x80) == 0; in st_open()
1280 if (scsi_autopm_get_device(STp->device) < 0) { in st_open()
1281 retval = -EIO; in st_open()
1285 if (!scsi_block_when_processing_errors(STp->device)) { in st_open()
1286 retval = (-ENXIO); in st_open()
1291 if (!enlarge_buffer(STp->buffer, PAGE_SIZE)) { in st_open()
1294 retval = (-EOVERFLOW); in st_open()
1298 (STp->buffer)->cleared = 0; in st_open()
1299 (STp->buffer)->writing = 0; in st_open()
1300 (STp->buffer)->syscall_result = 0; in st_open()
1302 STp->write_prot = ((filp->f_flags & O_ACCMODE) == O_RDONLY); in st_open()
1304 STp->dirty = 0; in st_open()
1306 STps = &(STp->ps[i]); in st_open()
1307 STps->rw = ST_IDLE; in st_open()
1309 STp->try_dio_now = STp->try_dio; in st_open()
1310 STp->recover_count = 0; in st_open()
1311 DEB( STp->nbr_waits = STp->nbr_finished = 0; in st_open()
1312 STp->nbr_requests = STp->nbr_dio = STp->nbr_pages = 0; ) in st_open()
1317 if ((filp->f_flags & O_NONBLOCK) == 0 && in st_open()
1319 if (STp->ready == NO_TAPE) in st_open()
1320 retval = (-ENOMEDIUM); in st_open()
1322 retval = (-EIO); in st_open()
1328 normalize_buffer(STp->buffer); in st_open()
1330 STp->in_use = 0; in st_open()
1333 scsi_autopm_put_device(STp->device); in st_open()
1346 struct scsi_tape *STp = filp->private_data; in st_flush()
1347 struct st_modedef *STm = &(STp->modes[STp->current_mode]); in st_flush()
1348 struct st_partstat *STps = &(STp->ps[STp->partition]); in st_flush()
1353 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1355 if (result != 0 && result != (-ENOSPC)) in st_flush()
1359 if (STp->can_partitions && in st_flush()
1367 DEBC( if (STp->nbr_requests) in st_flush()
1370 "pages %d.\n", STp->nbr_requests, STp->nbr_dio, in st_flush()
1371 STp->nbr_pages)); in st_flush()
1373 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1374 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush()
1378 STp->nbr_waits, STp->nbr_finished); in st_flush()
1382 if (STp->immediate_filemark) in st_flush()
1384 cmd[4] = 1 + STp->two_fm; in st_flush()
1387 STp->device->request_queue->rq_timeout, in st_flush()
1390 result = (STp->buffer)->syscall_result; in st_flush()
1394 if (STp->buffer->syscall_result == 0 || in st_flush()
1395 (cmdstatp->have_sense && !cmdstatp->deferred && in st_flush()
1396 (cmdstatp->flags & SENSE_EOM) && in st_flush()
1397 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_flush()
1398 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) && in st_flush()
1399 (!cmdstatp->remainder_valid || cmdstatp->uremainder64 == 0))) { in st_flush()
1403 if (STps->drv_file >= 0) in st_flush()
1404 STps->drv_file++; in st_flush()
1405 STps->drv_block = 0; in st_flush()
1406 if (STp->two_fm) in st_flush()
1408 STps->eof = ST_FM; in st_flush()
1416 result = (-EIO); in st_flush()
1420 } else if (!STp->rew_at_close) { in st_flush()
1421 STps = &(STp->ps[STp->partition]); in st_flush()
1422 if (!STm->sysv || STps->rw != ST_READING) { in st_flush()
1423 if (STp->can_bsr) in st_flush()
1425 else if (STps->eof == ST_FM_HIT) { in st_flush()
1428 if (STps->drv_file >= 0) in st_flush()
1429 STps->drv_file++; in st_flush()
1430 STps->drv_block = 0; in st_flush()
1431 STps->eof = ST_FM; in st_flush()
1433 STps->eof = ST_NOEOF; in st_flush()
1435 } else if ((STps->eof == ST_NOEOF && in st_flush()
1437 STps->eof == ST_FM_HIT) { in st_flush()
1438 if (STps->drv_file >= 0) in st_flush()
1439 STps->drv_file++; in st_flush()
1440 STps->drv_block = 0; in st_flush()
1441 STps->eof = ST_FM; in st_flush()
1446 if (STp->rew_at_close) { in st_flush()
1459 struct scsi_tape *STp = filp->private_data; in st_release()
1461 if (STp->door_locked == ST_LOCKED_AUTO) in st_release()
1464 normalize_buffer(STp->buffer); in st_release()
1466 STp->in_use = 0; in st_release()
1468 scsi_autopm_put_device(STp->device); in st_release()
1485 if (!scsi_block_when_processing_errors(STp->device)) { in rw_checks()
1486 retval = (-ENXIO); in rw_checks()
1490 if (STp->ready != ST_READY) { in rw_checks()
1491 if (STp->ready == ST_NO_TAPE) in rw_checks()
1492 retval = (-ENOMEDIUM); in rw_checks()
1494 retval = (-EIO); in rw_checks()
1498 if (! STp->modes[STp->current_mode].defined) { in rw_checks()
1499 retval = (-ENXIO); in rw_checks()
1508 if (STp->pos_unknown) { in rw_checks()
1509 retval = (-EIO); in rw_checks()
1517 if (!STp->in_use) { in rw_checks()
1520 retval = (-EIO); in rw_checks()
1524 if (STp->can_partitions && in rw_checks()
1528 if (STp->block_size == 0 && STp->max_block > 0 && in rw_checks()
1529 (count < STp->min_block || count > STp->max_block)) { in rw_checks()
1530 retval = (-EINVAL); in rw_checks()
1534 if (STp->do_auto_lock && STp->door_locked == ST_UNLOCKED && in rw_checks()
1536 STp->door_locked = ST_LOCKED_AUTO; in rw_checks()
1547 struct st_buffer *STbp = STp->buffer; in setup_buffering()
1550 i = STp->try_dio_now && try_rdio; in setup_buffering()
1552 i = STp->try_dio_now && try_wdio; in setup_buffering()
1555 STp->device->request_queue)) == 0) { in setup_buffering()
1556 i = sgl_map_user_pages(STbp, STbp->use_sg, (unsigned long)buf, in setup_buffering()
1559 STbp->do_dio = i; in setup_buffering()
1560 STbp->buffer_bytes = 0; /* can be used as transfer counter */ in setup_buffering()
1563 STbp->do_dio = 0; /* fall back to buffering with any error */ in setup_buffering()
1564 STbp->sg_segs = STbp->do_dio; in setup_buffering()
1566 if (STbp->do_dio) { in setup_buffering()
1567 STp->nbr_dio++; in setup_buffering()
1568 STp->nbr_pages += STbp->do_dio; in setup_buffering()
1572 STbp->do_dio = 0; in setup_buffering()
1573 DEB( STp->nbr_requests++; ) in setup_buffering()
1575 if (!STbp->do_dio) { in setup_buffering()
1576 if (STp->block_size) in setup_buffering()
1577 bufsize = STp->block_size > st_fixed_buffer_size ? in setup_buffering()
1578 STp->block_size : st_fixed_buffer_size; in setup_buffering()
1583 if (is_read && STp->sili && !STbp->cleared) in setup_buffering()
1587 if (bufsize > STbp->buffer_size && in setup_buffering()
1592 retval = (-EOVERFLOW); in setup_buffering()
1595 if (STp->block_size) in setup_buffering()
1596 STbp->buffer_blocks = bufsize / STp->block_size; in setup_buffering()
1609 STbp = STp->buffer; in release_buffering()
1610 if (STbp->do_dio) { in release_buffering()
1611 sgl_unmap_user_pages(STbp, STbp->do_dio, is_read); in release_buffering()
1612 STbp->do_dio = 0; in release_buffering()
1613 STbp->sg_segs = 0; in release_buffering()
1630 struct scsi_tape *STp = filp->private_data; in st_write()
1635 if (mutex_lock_interruptible(&STp->lock)) in st_write()
1636 return -ERESTARTSYS; in st_write()
1643 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_write()
1646 retval = (-EINVAL); in st_write()
1650 STm = &(STp->modes[STp->current_mode]); in st_write()
1651 STps = &(STp->ps[STp->partition]); in st_write()
1653 if (STp->write_prot) { in st_write()
1654 retval = (-EACCES); in st_write()
1659 if (STps->rw == ST_READING) { in st_write()
1663 STps->rw = ST_WRITING; in st_write()
1664 } else if (STps->rw != ST_WRITING && in st_write()
1665 STps->drv_file == 0 && STps->drv_block == 0) { in st_write()
1668 if (STm->default_compression != ST_DONT_TOUCH && in st_write()
1669 !(STp->compression_changed)) { in st_write()
1670 if (st_compression(STp, (STm->default_compression == ST_YES))) { in st_write()
1674 retval = (-EINVAL); in st_write()
1681 STbp = STp->buffer; in st_write()
1684 if (i == -ENOSPC) in st_write()
1685 STps->eof = ST_EOM_OK; in st_write()
1687 STps->eof = ST_EOM_ERROR; in st_write()
1690 if (STps->eof == ST_EOM_OK) { in st_write()
1691 STps->eof = ST_EOD_1; /* allow next write */ in st_write()
1692 retval = (-ENOSPC); in st_write()
1695 else if (STps->eof == ST_EOM_ERROR) { in st_write()
1696 retval = (-EIO); in st_write()
1702 if (STp->block_size != 0 && in st_write()
1703 !STbp->do_dio && in st_write()
1705 copy_from_user(&i, buf + count - 1, 1) != 0)) { in st_write()
1706 retval = (-EFAULT); in st_write()
1718 cmd[1] = (STp->block_size != 0); in st_write()
1720 STps->rw = ST_WRITING; in st_write()
1725 if (STbp->do_dio) { in st_write()
1729 if (STp->block_size == 0) in st_write()
1732 do_count = STbp->buffer_blocks * STp->block_size - in st_write()
1733 STbp->buffer_bytes; in st_write()
1744 count -= do_count; in st_write()
1747 async_write = STp->block_size == 0 && !STbp->do_dio && in st_write()
1748 STm->do_async_writes && STps->eof < ST_EOM_OK; in st_write()
1750 if (STp->block_size != 0 && STm->do_buffer_writes && in st_write()
1751 !(STp->try_dio_now && try_wdio) && STps->eof < ST_EOM_OK && in st_write()
1752 STbp->buffer_bytes < STbp->buffer_size) { in st_write()
1753 STp->dirty = 1; in st_write()
1760 if (STp->block_size == 0) in st_write()
1763 if (!STbp->do_dio) in st_write()
1764 blks = STbp->buffer_bytes; in st_write()
1767 blks /= STp->block_size; in st_write()
1768 transfer = blks * STp->block_size; in st_write()
1775 STp->device->request_queue->rq_timeout, in st_write()
1778 retval = STbp->syscall_result; in st_write()
1781 if (async_write && !STbp->syscall_result) { in st_write()
1782 STbp->writing = transfer; in st_write()
1783 STp->dirty = !(STbp->writing == in st_write()
1784 STbp->buffer_bytes); in st_write()
1786 DEB( STp->write_pending = 1; ) in st_write()
1790 if (STbp->syscall_result != 0) { in st_write()
1791 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_write()
1794 if (cmdstatp->have_sense && (cmdstatp->flags & SENSE_EOM)) { in st_write()
1795 scode = cmdstatp->sense_hdr.sense_key; in st_write()
1796 if (cmdstatp->remainder_valid) in st_write()
1797 undone = (int)cmdstatp->uremainder64; in st_write()
1798 else if (STp->block_size == 0 && in st_write()
1803 if (STp->block_size != 0) in st_write()
1804 undone *= STp->block_size; in st_write()
1808 b_point -= undone; in st_write()
1809 do_count -= undone; in st_write()
1810 if (STp->block_size) in st_write()
1811 blks = (transfer - undone) / STp->block_size; in st_write()
1812 STps->eof = ST_EOM_OK; in st_write()
1817 if (STp->block_size == 0 || in st_write()
1819 retval = (-ENOSPC); /* EOM within current request */ in st_write()
1826 if (!retry_eot && !cmdstatp->deferred && in st_write()
1828 move_buffer_data(STp->buffer, transfer - undone); in st_write()
1830 if (STps->drv_block >= 0) { in st_write()
1831 STps->drv_block += (transfer - undone) / in st_write()
1832 STp->block_size; in st_write()
1834 STps->eof = ST_EOM_OK; in st_write()
1838 STp->buffer->buffer_bytes); in st_write()
1844 count -= do_count; in st_write()
1846 STps->eof = ST_EOM_ERROR; in st_write()
1847 STps->drv_block = (-1); /* Too cautious? */ in st_write()
1848 retval = (-EIO); /* EOM for old data */ in st_write()
1855 STps->drv_block = (-1); /* Too cautious? */ in st_write()
1856 retval = STbp->syscall_result; in st_write()
1861 if (STps->drv_block >= 0) { in st_write()
1862 if (STp->block_size == 0) in st_write()
1863 STps->drv_block += (do_count > 0); in st_write()
1865 STps->drv_block += blks; in st_write()
1868 STbp->buffer_bytes = 0; in st_write()
1869 STp->dirty = 0; in st_write()
1873 retval = total - count; in st_write()
1878 if (STps->eof == ST_EOD_1) in st_write()
1879 STps->eof = ST_EOM_OK; in st_write()
1880 else if (STps->eof != ST_EOM_OK) in st_write()
1881 STps->eof = ST_NOEOF; in st_write()
1882 retval = total - count; in st_write()
1888 mutex_unlock(&STp->lock); in st_write()
1913 STm = &(STp->modes[STp->current_mode]); in read_tape()
1914 STps = &(STp->ps[STp->partition]); in read_tape()
1915 if (STps->eof == ST_FM_HIT) in read_tape()
1917 STbp = STp->buffer; in read_tape()
1919 if (STp->block_size == 0) in read_tape()
1922 if (!(STp->try_dio_now && try_rdio) && STm->do_read_ahead) { in read_tape()
1923 blks = (STp->buffer)->buffer_blocks; in read_tape()
1924 bytes = blks * STp->block_size; in read_tape()
1927 if (!STbp->do_dio && bytes > (STp->buffer)->buffer_size) in read_tape()
1928 bytes = (STp->buffer)->buffer_size; in read_tape()
1929 blks = bytes / STp->block_size; in read_tape()
1930 bytes = blks * STp->block_size; in read_tape()
1936 cmd[1] = (STp->block_size != 0); in read_tape()
1937 if (!cmd[1] && STp->sili) in read_tape()
1945 STp->device->request_queue->rq_timeout, in read_tape()
1950 return STbp->syscall_result; in read_tape()
1952 STbp->read_pointer = 0; in read_tape()
1953 STps->at_sm = 0; in read_tape()
1956 if (STbp->syscall_result) { in read_tape()
1957 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in read_tape()
1962 SRpnt->sense[0], SRpnt->sense[1], in read_tape()
1963 SRpnt->sense[2], SRpnt->sense[3], in read_tape()
1964 SRpnt->sense[4], SRpnt->sense[5], in read_tape()
1965 SRpnt->sense[6], SRpnt->sense[7]); in read_tape()
1966 if (cmdstatp->have_sense) { in read_tape()
1968 if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK) in read_tape()
1969 cmdstatp->flags &= 0xcf; /* No need for EOM in this case */ in read_tape()
1971 if (cmdstatp->flags != 0) { /* EOF, EOM, or ILI */ in read_tape()
1973 if (cmdstatp->remainder_valid) in read_tape()
1974 transfer = (int)cmdstatp->uremainder64; in read_tape()
1977 if (cmdstatp->sense_hdr.sense_key == MEDIUM_ERROR) { in read_tape()
1978 if (STp->block_size == 0) in read_tape()
1981 cmdstatp->flags &= ~SENSE_ILI; in read_tape()
1984 if (cmdstatp->flags & SENSE_ILI) { /* ILI */ in read_tape()
1985 if (STp->block_size == 0 && in read_tape()
1991 bytes - transfer, in read_tape()
1993 if (STps->drv_block >= 0) in read_tape()
1994 STps->drv_block += 1; in read_tape()
1995 STbp->buffer_bytes = 0; in read_tape()
1996 return (-ENOMEM); in read_tape()
1997 } else if (STp->block_size == 0) { in read_tape()
1998 STbp->buffer_bytes = bytes - transfer; in read_tape()
2006 if (STps->drv_block >= 0) in read_tape()
2007 STps->drv_block += blks - transfer + 1; in read_tape()
2009 return (-EIO); in read_tape()
2012 STbp->buffer_bytes = (blks - transfer) * in read_tape()
2013 STp->block_size; in read_tape()
2018 STbp->buffer_bytes); in read_tape()
2019 if (STps->drv_block >= 0) in read_tape()
2020 STps->drv_block += 1; in read_tape()
2022 return (-EIO); in read_tape()
2024 } else if (cmdstatp->flags & SENSE_FMK) { /* FM overrides EOM */ in read_tape()
2025 if (STps->eof != ST_FM_HIT) in read_tape()
2026 STps->eof = ST_FM_HIT; in read_tape()
2028 STps->eof = ST_EOD_2; in read_tape()
2029 if (STp->block_size == 0) in read_tape()
2030 STbp->buffer_bytes = 0; in read_tape()
2032 STbp->buffer_bytes = in read_tape()
2033 bytes - transfer * STp->block_size; in read_tape()
2036 STbp->buffer_bytes); in read_tape()
2037 } else if (cmdstatp->flags & SENSE_EOM) { in read_tape()
2038 if (STps->eof == ST_FM) in read_tape()
2039 STps->eof = ST_EOD_1; in read_tape()
2041 STps->eof = ST_EOM_OK; in read_tape()
2042 if (STp->block_size == 0) in read_tape()
2043 STbp->buffer_bytes = bytes - transfer; in read_tape()
2045 STbp->buffer_bytes = in read_tape()
2046 bytes - transfer * STp->block_size; in read_tape()
2050 STbp->buffer_bytes); in read_tape()
2056 STps->drv_block = (-1); in read_tape()
2057 if (STps->eof == ST_FM && in read_tape()
2058 cmdstatp->sense_hdr.sense_key == BLANK_CHECK) { in read_tape()
2062 STps->eof = ST_EOD_2; /* First BLANK_CHECK after FM */ in read_tape()
2064 retval = (-EIO); in read_tape()
2067 if (STbp->buffer_bytes < 0) /* Caused by bogus sense data */ in read_tape()
2068 STbp->buffer_bytes = 0; in read_tape()
2071 else { /* Non-extended sense */ in read_tape()
2072 retval = STbp->syscall_result; in read_tape()
2078 STbp->buffer_bytes = bytes; in read_tape()
2079 if (STp->sili) /* In fixed block mode residual is always zero here */ in read_tape()
2080 STbp->buffer_bytes -= STp->buffer->cmdstat.residual; in read_tape()
2083 if (STps->drv_block >= 0) { in read_tape()
2084 if (STp->block_size == 0) in read_tape()
2085 STps->drv_block++; in read_tape()
2087 STps->drv_block += STbp->buffer_bytes / STp->block_size; in read_tape()
2102 struct scsi_tape *STp = filp->private_data; in st_read()
2105 struct st_buffer *STbp = STp->buffer; in st_read()
2107 if (mutex_lock_interruptible(&STp->lock)) in st_read()
2108 return -ERESTARTSYS; in st_read()
2114 STm = &(STp->modes[STp->current_mode]); in st_read()
2115 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_read()
2116 if (!STm->do_read_ahead) { in st_read()
2117 retval = (-EINVAL); /* Read must be integral number of blocks */ in st_read()
2120 STp->try_dio_now = 0; /* Direct i/o can't handle split blocks */ in st_read()
2123 STps = &(STp->ps[STp->partition]); in st_read()
2124 if (STps->rw == ST_WRITING) { in st_read()
2128 STps->rw = ST_READING; in st_read()
2131 if (debugging && STps->eof != ST_NOEOF) in st_read()
2134 STps->eof, STbp->buffer_bytes); in st_read()
2140 do_dio = STbp->do_dio; in st_read()
2142 if (STbp->buffer_bytes == 0 && in st_read()
2143 STps->eof >= ST_EOD_1) { in st_read()
2144 if (STps->eof < ST_EOD) { in st_read()
2145 STps->eof += 1; in st_read()
2149 retval = (-EIO); /* EOM or Blank Check */ in st_read()
2158 copy_from_user(&i, buf + count - 1, 1) != 0 || in st_read()
2159 copy_to_user(buf + count - 1, &i, 1) != 0) { in st_read()
2160 retval = (-EFAULT); in st_read()
2165 STps->rw = ST_READING; in st_read()
2172 if (STbp->buffer_bytes == 0) { in st_read()
2173 special = read_tape(STp, count - total, &SRpnt); in st_read()
2181 if (STbp->buffer_bytes > 0) { in st_read()
2183 if (debugging && STps->eof != ST_NOEOF) in st_read()
2186 STps->eof, STbp->buffer_bytes, in st_read()
2187 (int)(count - total)); in st_read()
2189 transfer = STbp->buffer_bytes < count - total ? in st_read()
2190 STbp->buffer_bytes : count - total; in st_read()
2202 if (STp->block_size == 0) in st_read()
2210 if (STps->eof == ST_FM_HIT) { in st_read()
2211 STps->eof = ST_FM; in st_read()
2212 STps->drv_block = 0; in st_read()
2213 if (STps->drv_file >= 0) in st_read()
2214 STps->drv_file++; in st_read()
2215 } else if (STps->eof == ST_EOD_1) { in st_read()
2216 STps->eof = ST_EOD_2; in st_read()
2217 STps->drv_block = 0; in st_read()
2218 if (STps->drv_file >= 0) in st_read()
2219 STps->drv_file++; in st_read()
2220 } else if (STps->eof == ST_EOD_2) in st_read()
2221 STps->eof = ST_EOD; in st_read()
2222 } else if (STps->eof == ST_FM) in st_read()
2223 STps->eof = ST_NOEOF; in st_read()
2233 STbp->buffer_bytes = 0; in st_read()
2235 mutex_unlock(&STp->lock); in st_read()
2250 STp->current_mode, STm->do_buffer_writes, in DEB()
2251 STm->do_async_writes, STm->do_read_ahead); in DEB()
2255 STp->can_bsr, STp->two_fm, STp->fast_mteom, in DEB()
2256 STp->do_auto_lock); in DEB()
2260 STm->defaults_for_writes, STp->omit_blklims, in DEB()
2261 STp->can_partitions, STp->scsi2_logical); in DEB()
2265 STm->sysv, STp->immediate, STp->sili, in DEB()
2266 STp->immediate_filemark); in DEB()
2281 STm = &(STp->modes[STp->current_mode]);
2282 if (!STm->defined) {
2283 cd0 = STm->cdevs[0];
2284 cd1 = STm->cdevs[1];
2285 d0 = STm->devs[0];
2286 d1 = STm->devs[1];
2287 memcpy(STm, &(STp->modes[0]), sizeof(struct st_modedef));
2288 STm->cdevs[0] = cd0;
2289 STm->cdevs[1] = cd1;
2290 STm->devs[0] = d0;
2291 STm->devs[1] = d1;
2294 STp->current_mode);
2299 STm->do_buffer_writes = (options & MT_ST_BUFFER_WRITES) != 0;
2300 STm->do_async_writes = (options & MT_ST_ASYNC_WRITES) != 0;
2301 STm->defaults_for_writes = (options & MT_ST_DEF_WRITES) != 0;
2302 STm->do_read_ahead = (options & MT_ST_READ_AHEAD) != 0;
2303 STp->two_fm = (options & MT_ST_TWO_FM) != 0;
2304 STp->fast_mteom = (options & MT_ST_FAST_MTEOM) != 0;
2305 STp->do_auto_lock = (options & MT_ST_AUTO_LOCK) != 0;
2306 STp->can_bsr = (options & MT_ST_CAN_BSR) != 0;
2307 STp->omit_blklims = (options & MT_ST_NO_BLKLIMS) != 0;
2308 if ((STp->device)->scsi_level >= SCSI_2)
2309 STp->can_partitions = (options & MT_ST_CAN_PARTITIONS) != 0;
2310 STp->scsi2_logical = (options & MT_ST_SCSI2LOGICAL) != 0;
2311 STp->immediate = (options & MT_ST_NOWAIT) != 0;
2312 STp->immediate_filemark = (options & MT_ST_NOWAIT_EOF) != 0;
2313 STm->sysv = (options & MT_ST_SYSV) != 0;
2314 STp->sili = (options & MT_ST_SILI) != 0;
2320 STm->do_buffer_writes = value;
2322 STm->do_async_writes = value;
2324 STm->defaults_for_writes = value;
2326 STm->do_read_ahead = value;
2328 STp->two_fm = value;
2330 STp->fast_mteom = value;
2332 STp->do_auto_lock = value;
2334 STp->can_bsr = value;
2336 STp->omit_blklims = value;
2337 if ((STp->device)->scsi_level >= SCSI_2 &&
2339 STp->can_partitions = value;
2341 STp->scsi2_logical = value;
2343 STp->immediate = value;
2345 STp->immediate_filemark = value;
2347 STm->sysv = value;
2349 STp->sili = value;
2359 STm->default_blksize = (-1);
2362 STm->default_blksize = value;
2364 "%d bytes.\n", STm->default_blksize);
2365 if (STp->ready == ST_READY) {
2366 STp->blksize_changed = 0;
2373 STp->long_timeout = (value & ~MT_ST_SET_LONG_TIMEOUT) * HZ;
2377 blk_queue_rq_timeout(STp->device->request_queue,
2387 return (-EINVAL);
2388 STp->cln_mode = value;
2389 STp->cln_sense_mask = (options >> 8) & 0xff;
2390 STp->cln_sense_value = (options >> 16) & 0xff;
2393 value, STp->cln_sense_mask, STp->cln_sense_value);
2399 STm->default_density = (-1);
2403 STm->default_density = value & 0xff;
2405 STm->default_density);
2406 if (STp->ready == ST_READY) {
2407 STp->density_changed = 0;
2413 STp->default_drvbuffer = 0xff;
2417 STp->default_drvbuffer = value & 7;
2420 STp->default_drvbuffer);
2421 if (STp->ready == ST_READY)
2422 st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer);
2426 STm->default_compression = ST_DONT_TOUCH;
2431 STp->c_algo = (value & 0xff00) >> 8;
2434 STp->c_algo);
2437 STm->default_compression = (value & 1 ? ST_YES : ST_NO);
2441 if (STp->ready == ST_READY) {
2442 STp->compression_changed = 0;
2443 st_compression(STp, (STm->default_compression == ST_YES));
2449 return (-EIO);
2489 STp->device->request_queue->rq_timeout, 0, 1); in read_mode_page()
2491 return (STp->buffer)->syscall_result; in read_mode_page()
2495 return STp->buffer->syscall_result; in read_mode_page()
2500 in the buffer is correctly formatted. The long timeout is used if slow is non-zero. */
2511 pgo = MODE_HEADER_LENGTH + (STp->buffer)->b_data[MH_OFF_BDESCS_LENGTH]; in write_mode_page()
2512 cmd[4] = pgo + (STp->buffer)->b_data[pgo + MP_OFF_PAGE_LENGTH] + 2; in write_mode_page()
2515 (STp->buffer)->b_data[MH_OFF_DATA_LENGTH] = 0; in write_mode_page()
2516 (STp->buffer)->b_data[MH_OFF_MEDIUM_TYPE] = 0; in write_mode_page()
2517 (STp->buffer)->b_data[MH_OFF_DEV_SPECIFIC] &= ~MH_BIT_WP; in write_mode_page()
2518 (STp->buffer)->b_data[pgo + MP_OFF_PAGE_NBR] &= MP_MSK_PAGE_NBR; in write_mode_page()
2521 STp->long_timeout : STp->device->request_queue->rq_timeout; in write_mode_page()
2525 return (STp->buffer)->syscall_result; in write_mode_page()
2529 return STp->buffer->syscall_result; in write_mode_page()
2546 The block descriptors are read and written because Sony SDT-7000 does not
2554 unsigned char *b_data = (STp->buffer)->b_data; in st_compression()
2556 if (STp->ready != ST_READY) in st_compression()
2557 return (-EIO); in st_compression()
2563 return (-EIO); in st_compression()
2573 return (-EIO); in st_compression()
2579 if (STp->c_algo != 0) in st_compression()
2580 b_data[mpoffs + CP_OFF_C_ALGO] = STp->c_algo; in st_compression()
2584 if (STp->c_algo != 0) in st_compression()
2591 return (-EIO); in st_compression()
2595 STp->compression_changed = 1; in st_compression()
2603 int retval = (-EIO), timeout; in do_load_unload()
2608 if (STp->ready != ST_READY && !load_code) { in do_load_unload()
2609 if (STp->ready == ST_NO_TAPE) in do_load_unload()
2610 return (-ENOMEDIUM); in do_load_unload()
2612 return (-EIO); in do_load_unload()
2626 load_code - MT_ST_HPLOADER_OFFSET); in do_load_unload()
2627 cmd[3] = load_code - MT_ST_HPLOADER_OFFSET; /* MediaID field of C1553A */ in do_load_unload()
2629 if (STp->immediate) { in do_load_unload()
2631 timeout = STp->device->request_queue->rq_timeout; in do_load_unload()
2634 timeout = STp->long_timeout; in do_load_unload()
2646 return (STp->buffer)->syscall_result; in do_load_unload()
2648 retval = (STp->buffer)->syscall_result; in do_load_unload()
2654 STp->rew_at_close = 0; in do_load_unload()
2655 STp->ready = ST_NO_TAPE; in do_load_unload()
2658 STp->rew_at_close = STp->autorew_dev; in do_load_unload()
2665 STps = &(STp->ps[STp->partition]); in do_load_unload()
2666 STps->drv_file = STps->drv_block = (-1); in do_load_unload()
2684 sc = -sc; in deb_space_print()
2708 WARN_ON(STp->buffer->do_dio != 0); in st_int_ioctl()
2709 if (STp->ready != ST_READY) { in st_int_ioctl()
2710 if (STp->ready == ST_NO_TAPE) in st_int_ioctl()
2711 return (-ENOMEDIUM); in st_int_ioctl()
2713 return (-EIO); in st_int_ioctl()
2715 timeout = STp->long_timeout; in st_int_ioctl()
2716 STps = &(STp->ps[STp->partition]); in st_int_ioctl()
2717 fileno = STps->drv_file; in st_int_ioctl()
2718 blkno = STps->drv_block; in st_int_ioctl()
2719 at_sm = STps->at_sm; in st_int_ioctl()
2744 ltmp = (-arg); in st_int_ioctl()
2750 fileno -= arg; in st_int_ioctl()
2751 blkno = (-1); /* We can't know the block number */ in st_int_ioctl()
2768 ltmp = (-arg); in st_int_ioctl()
2774 blkno -= arg; in st_int_ioctl()
2785 blkno = fileno = (-1); in st_int_ioctl()
2792 ltmp = (-arg); in st_int_ioctl()
2798 blkno = fileno = (-1); in st_int_ioctl()
2805 if (STp->write_prot) in st_int_ioctl()
2806 return (-EACCES); in st_int_ioctl()
2811 (cmd_in == MTWEOF && STp->immediate_filemark)) in st_int_ioctl()
2816 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2838 if (STp->immediate) { in st_int_ioctl()
2840 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2850 if (STp->immediate) { in st_int_ioctl()
2852 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2859 if (!STp->fast_mteom) { in st_int_ioctl()
2862 fileno = STps->drv_file; in st_int_ioctl()
2863 if (STps->eof >= ST_EOD_1) in st_int_ioctl()
2870 fileno = (-1); in st_int_ioctl()
2874 blkno = -1; in st_int_ioctl()
2878 if (STp->write_prot) in st_int_ioctl()
2879 return (-EACCES); in st_int_ioctl()
2881 cmd[1] = (arg ? 1 : 0); /* Long erase with non-zero argument */ in st_int_ioctl()
2882 if (STp->immediate) { in st_int_ioctl()
2884 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2887 timeout = STp->long_timeout * 8; in st_int_ioctl()
2897 if (STp->dirty || (STp->buffer)->buffer_bytes != 0) in st_int_ioctl()
2898 return (-EIO); /* Not allowed if data in buffer */ in st_int_ioctl()
2901 STp->max_block > 0 && in st_int_ioctl()
2902 ((arg & MT_ST_BLKSIZE_MASK) < STp->min_block || in st_int_ioctl()
2903 (arg & MT_ST_BLKSIZE_MASK) > STp->max_block)) { in st_int_ioctl()
2905 return (-EINVAL); in st_int_ioctl()
2908 if ((STp->use_pf & USE_PF)) in st_int_ioctl()
2913 memset((STp->buffer)->b_data, 0, 12); in st_int_ioctl()
2915 (STp->buffer)->b_data[2] = (arg & 7) << 4; in st_int_ioctl()
2917 (STp->buffer)->b_data[2] = in st_int_ioctl()
2918 STp->drv_buffer << 4; in st_int_ioctl()
2919 (STp->buffer)->b_data[3] = 8; /* block descriptor length */ in st_int_ioctl()
2921 (STp->buffer)->b_data[4] = arg; in st_int_ioctl()
2922 STp->density_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2924 (STp->buffer)->b_data[4] = arg >> 24; in st_int_ioctl()
2926 (STp->buffer)->b_data[4] = STp->density; in st_int_ioctl()
2930 STp->blksize_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2932 ltmp = STp->block_size; in st_int_ioctl()
2933 (STp->buffer)->b_data[9] = (ltmp >> 16); in st_int_ioctl()
2934 (STp->buffer)->b_data[10] = (ltmp >> 8); in st_int_ioctl()
2935 (STp->buffer)->b_data[11] = ltmp; in st_int_ioctl()
2936 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2941 (STp->buffer)->b_data[9] * 65536 + in st_int_ioctl()
2942 (STp->buffer)->b_data[10] * 256 + in st_int_ioctl()
2943 (STp->buffer)->b_data[11]); in st_int_ioctl()
2947 (STp->buffer)->b_data[4]); in st_int_ioctl()
2951 ((STp->buffer)->b_data[2] >> 4) & 7); in st_int_ioctl()
2955 return (-ENOSYS); in st_int_ioctl()
2961 return (STp->buffer)->syscall_result; in st_int_ioctl()
2963 ioctl_result = (STp->buffer)->syscall_result; in st_int_ioctl()
2968 STps->drv_block = blkno; in st_int_ioctl()
2969 STps->drv_file = fileno; in st_int_ioctl()
2970 STps->at_sm = at_sm; in st_int_ioctl()
2978 STp->block_size = arg & MT_ST_BLKSIZE_MASK; in st_int_ioctl()
2979 if (STp->block_size != 0) { in st_int_ioctl()
2980 (STp->buffer)->buffer_blocks = in st_int_ioctl()
2981 (STp->buffer)->buffer_size / STp->block_size; in st_int_ioctl()
2983 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in st_int_ioctl()
2985 STp->density = arg >> MT_ST_DENSITY_SHIFT; in st_int_ioctl()
2987 STp->drv_buffer = (arg & 7); in st_int_ioctl()
2989 STp->density = arg; in st_int_ioctl()
2992 STps->eof = ST_EOD; in st_int_ioctl()
2994 STps->eof = ST_FM; in st_int_ioctl()
2996 STps->eof = ST_NOEOF; in st_int_ioctl()
2999 STps->rw = ST_IDLE; /* prevent automatic WEOF at close */ in st_int_ioctl()
3002 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_int_ioctl()
3004 if (cmdstatp->flags & SENSE_EOM) { in st_int_ioctl()
3007 STps->eof = ST_EOM_OK; in st_int_ioctl()
3008 STps->drv_block = 0; in st_int_ioctl()
3011 if (cmdstatp->remainder_valid) in st_int_ioctl()
3012 undone = (int)cmdstatp->uremainder64; in st_int_ioctl()
3017 cmdstatp->have_sense && in st_int_ioctl()
3018 (cmdstatp->flags & SENSE_EOM)) { in st_int_ioctl()
3019 if (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_int_ioctl()
3020 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) { in st_int_ioctl()
3022 STps->eof = ST_NOEOF; in st_int_ioctl()
3025 fileno -= undone; in st_int_ioctl()
3027 STps->eof = ST_NOEOF; in st_int_ioctl()
3029 STps->drv_file = fileno; in st_int_ioctl()
3032 STps->drv_file = fileno - undone; in st_int_ioctl()
3034 STps->drv_file = fileno; in st_int_ioctl()
3035 STps->drv_block = -1; in st_int_ioctl()
3036 STps->eof = ST_NOEOF; in st_int_ioctl()
3039 undone = (-undone); in st_int_ioctl()
3040 if (STps->drv_file >= 0) in st_int_ioctl()
3041 STps->drv_file = fileno + undone; in st_int_ioctl()
3042 STps->drv_block = 0; in st_int_ioctl()
3043 STps->eof = ST_NOEOF; in st_int_ioctl()
3045 if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */ in st_int_ioctl()
3046 if (STps->drv_file >= 0) in st_int_ioctl()
3047 STps->drv_file++; in st_int_ioctl()
3048 STps->drv_block = 0; in st_int_ioctl()
3049 STps->eof = ST_FM; in st_int_ioctl()
3052 STps->drv_block = blkno - undone; in st_int_ioctl()
3054 STps->drv_block = (-1); in st_int_ioctl()
3055 STps->eof = ST_NOEOF; in st_int_ioctl()
3058 if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */ in st_int_ioctl()
3059 STps->drv_file--; in st_int_ioctl()
3060 STps->drv_block = (-1); in st_int_ioctl()
3063 undone = (-undone); in st_int_ioctl()
3064 if (STps->drv_block >= 0) in st_int_ioctl()
3065 STps->drv_block = blkno + undone; in st_int_ioctl()
3067 STps->eof = ST_NOEOF; in st_int_ioctl()
3069 STps->drv_file = (-1); in st_int_ioctl()
3070 STps->drv_block = (-1); in st_int_ioctl()
3071 STps->eof = ST_EOD; in st_int_ioctl()
3076 if (cmdstatp->sense_hdr.sense_key == ILLEGAL_REQUEST && in st_int_ioctl()
3077 !(STp->use_pf & PF_TESTED)) { in st_int_ioctl()
3080 STp->use_pf = (STp->use_pf ^ USE_PF) | PF_TESTED; in st_int_ioctl()
3086 STps->eof = ST_NOEOF; in st_int_ioctl()
3088 if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK) in st_int_ioctl()
3089 STps->eof = ST_EOD; in st_int_ioctl()
3109 if (STp->ready != ST_READY) in get_location()
3110 return (-EIO); in get_location()
3113 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3118 if (!logical && !STp->scsi2_logical) in get_location()
3122 STp->device->request_queue->rq_timeout, in get_location()
3125 return (STp->buffer)->syscall_result; in get_location()
3127 if ((STp->buffer)->syscall_result != 0 || in get_location()
3128 (STp->device->scsi_level >= SCSI_2 && in get_location()
3129 ((STp->buffer)->b_data[0] & 4) != 0)) { in get_location()
3132 result = (-EIO); in get_location()
3135 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3136 *block = ((STp->buffer)->b_data[0] << 16) in get_location()
3137 + ((STp->buffer)->b_data[1] << 8) in get_location()
3138 + (STp->buffer)->b_data[2]; in get_location()
3141 *block = ((STp->buffer)->b_data[4] << 24) in get_location()
3142 + ((STp->buffer)->b_data[5] << 16) in get_location()
3143 + ((STp->buffer)->b_data[6] << 8) in get_location()
3144 + (STp->buffer)->b_data[7]; in get_location()
3145 *partition = (STp->buffer)->b_data[1]; in get_location()
3146 if (((STp->buffer)->b_data[0] & 0x80) && in get_location()
3147 (STp->buffer)->b_data[1] == 0) /* BOP of partition 0 */ in get_location()
3148 STp->ps[0].drv_block = STp->ps[0].drv_file = 0; in get_location()
3172 if (STp->ready != ST_READY) in set_location()
3173 return (-EIO); in set_location()
3174 timeout = STp->long_timeout; in set_location()
3175 STps = &(STp->ps[STp->partition]); in set_location()
3180 return (-EIO); ) in set_location()
3183 if ((!STp->can_partitions && partition != 0) || in set_location()
3185 return (-EINVAL); in set_location()
3186 if (partition != STp->partition) { in set_location()
3188 STps->last_block_valid = 0; in set_location()
3190 STps->last_block_valid = 1; in set_location()
3191 STps->last_block_visited = blk; in set_location()
3194 blk, STp->partition); in set_location()
3199 if ((STp->device)->scsi_level < SCSI_2) { in set_location()
3211 if (!logical && !STp->scsi2_logical) in set_location()
3213 if (STp->partition != partition) { in set_location()
3217 "from %d to %d\n", STp->partition, in set_location()
3221 if (STp->immediate) { in set_location()
3223 timeout = STp->device->request_queue->rq_timeout; in set_location()
3229 return (STp->buffer)->syscall_result; in set_location()
3231 STps->drv_block = STps->drv_file = (-1); in set_location()
3232 STps->eof = ST_NOEOF; in set_location()
3233 if ((STp->buffer)->syscall_result != 0) { in set_location()
3234 result = (-EIO); in set_location()
3235 if (STp->can_partitions && in set_location()
3236 (STp->device)->scsi_level >= SCSI_2 && in set_location()
3238 STp->partition = p; in set_location()
3240 if (STp->can_partitions) { in set_location()
3241 STp->partition = partition; in set_location()
3242 STps = &(STp->ps[partition]); in set_location()
3243 if (!STps->last_block_valid || in set_location()
3244 STps->last_block_visited != block) { in set_location()
3245 STps->at_sm = 0; in set_location()
3246 STps->rw = ST_IDLE; in set_location()
3249 STps->at_sm = 0; in set_location()
3251 STps->drv_block = STps->drv_file = 0; in set_location()
3272 return (-EIO); in find_partition()
3282 if (STp->partition == STp->new_partition) in switch_partition()
3284 STps = &(STp->ps[STp->new_partition]); in switch_partition()
3285 if (!STps->last_block_valid) in switch_partition()
3286 STps->last_block_visited = 0; in switch_partition()
3287 return set_location(STp, STps->last_block_visited, STp->new_partition, 1); in switch_partition()
3313 if (STp->ready != ST_READY) in nbr_partitions()
3314 return (-EIO); in nbr_partitions()
3320 result = (-EIO); in nbr_partitions()
3322 result = (STp->buffer)->b_data[MODE_HEADER_LENGTH + in nbr_partitions()
3334 int timeout = STp->long_timeout; in format_medium()
3341 if (STp->immediate) { in format_medium()
3343 timeout = STp->device->request_queue->rq_timeout; in format_medium()
3349 result = STp->buffer->syscall_result; in format_medium()
3357 The block descriptors are read and written because Sony SDT-7000 does not
3362 Michael Schaefer's Sony SDT-7000 returns two descriptors and the second is
3363 used to set the size of partition 1 (this is what the SCSI-3 standard specifies).
3373 For drives that advertize SCSI-3 or newer, use the SSC-3 methods.
3379 bool scsi3 = STp->device->scsi_level >= SCSI_3, needs_format = false; in partition_tape()
3392 size = -size; in partition_tape()
3396 bp = (STp->buffer)->b_data; in partition_tape()
3401 psd_cnt = (bp[pgo + MP_OFF_PAGE_LENGTH] + 2 - PART_PAGE_FIXED_LENGTH) / 2; in partition_tape()
3436 result = -EINVAL; in partition_tape()
3491 result = (-EIO); in partition_tape()
3507 struct scsi_tape *STp = file->private_data; in st_ioctl()
3511 if (mutex_lock_interruptible(&STp->lock)) in st_ioctl()
3512 return -ERESTARTSYS; in st_ioctl()
3515 if (debugging && !STp->in_use) { in st_ioctl()
3517 retval = (-EIO); in st_ioctl()
3521 STm = &(STp->modes[STp->current_mode]); in st_ioctl()
3522 STps = &(STp->ps[STp->partition]); in st_ioctl()
3530 retval = scsi_ioctl_block_when_processing_errors(STp->device, cmd_in, in st_ioctl()
3531 file->f_flags & O_NDELAY); in st_ioctl()
3542 retval = (-EINVAL); in st_ioctl()
3548 retval = (-EFAULT); in st_ioctl()
3555 retval = (-EPERM); in st_ioctl()
3558 if (!STm->defined && in st_ioctl()
3561 retval = (-ENXIO); in st_ioctl()
3565 if (!STp->pos_unknown) { in st_ioctl()
3567 if (STps->eof == ST_FM_HIT) { in st_ioctl()
3570 mtc.mt_count -= 1; in st_ioctl()
3571 if (STps->drv_file >= 0) in st_ioctl()
3572 STps->drv_file += 1; in st_ioctl()
3575 if (STps->drv_file >= 0) in st_ioctl()
3576 STps->drv_file += 1; in st_ioctl()
3583 i = !STp->can_partitions || in st_ioctl()
3584 (STp->new_partition != STp->partition); in st_ioctl()
3598 if (STps->rw == ST_WRITING && in st_ioctl()
3609 STps->rw = ST_IDLE; in st_ioctl()
3624 retval = (-EIO); in st_ioctl()
3629 STp->device->was_reset = 0; in st_ioctl()
3635 STps->rw = ST_IDLE; /* Prevent automatic WEOF and fsf */ in st_ioctl()
3637 if (mtc.mt_op == MTOFFL && STp->door_locked != ST_UNLOCKED) in st_ioctl()
3647 if (!STp->can_partitions || in st_ioctl()
3649 retval = (-EINVAL); in st_ioctl()
3652 if (mtc.mt_count >= STp->nbr_partitions && in st_ioctl()
3653 (STp->nbr_partitions = nbr_partitions(STp)) < 0) { in st_ioctl()
3654 retval = (-EIO); in st_ioctl()
3657 if (mtc.mt_count >= STp->nbr_partitions) { in st_ioctl()
3658 retval = (-EINVAL); in st_ioctl()
3661 STp->new_partition = mtc.mt_count; in st_ioctl()
3667 if (!STp->can_partitions) { in st_ioctl()
3668 retval = (-EINVAL); in st_ioctl()
3682 STp->ps[i].rw = ST_IDLE; in st_ioctl()
3683 STp->ps[i].at_sm = 0; in st_ioctl()
3684 STp->ps[i].last_block_valid = 0; in st_ioctl()
3686 STp->partition = STp->new_partition = 0; in st_ioctl()
3687 STp->nbr_partitions = mtc.mt_count != 0 ? 2 : 1; in st_ioctl()
3688 STps->drv_block = STps->drv_file = 0; in st_ioctl()
3694 i = set_location(STp, mtc.mt_count, STp->new_partition, 0); in st_ioctl()
3695 if (!STp->can_partitions) in st_ioctl()
3696 STp->ps[0].rw = ST_IDLE; in st_ioctl()
3716 if (STp->can_partitions && STp->ready == ST_READY && in st_ioctl()
3728 if (!STm->defined) { in st_ioctl()
3729 retval = (-ENXIO); in st_ioctl()
3737 if (STp->can_partitions && in st_ioctl()
3747 retval = (-EINVAL); in st_ioctl()
3751 mt_status.mt_type = STp->tape_type; in st_ioctl()
3753 ((STp->block_size << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK) | in st_ioctl()
3754 ((STp->density << MT_ST_DENSITY_SHIFT) & MT_ST_DENSITY_MASK); in st_ioctl()
3755 mt_status.mt_blkno = STps->drv_block; in st_ioctl()
3756 mt_status.mt_fileno = STps->drv_file; in st_ioctl()
3757 if (STp->block_size != 0) { in st_ioctl()
3758 if (STps->rw == ST_WRITING) in st_ioctl()
3760 (STp->buffer)->buffer_bytes / STp->block_size; in st_ioctl()
3761 else if (STps->rw == ST_READING) in st_ioctl()
3762 mt_status.mt_blkno -= in st_ioctl()
3763 ((STp->buffer)->buffer_bytes + in st_ioctl()
3764 STp->block_size - 1) / STp->block_size; in st_ioctl()
3768 if (STp->drv_write_prot) in st_ioctl()
3776 mt_status.mt_erreg = (STp->recover_reg << MT_ST_SOFTERR_SHIFT); in st_ioctl()
3777 mt_status.mt_resid = STp->partition; in st_ioctl()
3778 if (STps->eof == ST_EOM_OK || STps->eof == ST_EOM_ERROR) in st_ioctl()
3780 else if (STps->eof >= ST_EOM_OK) in st_ioctl()
3782 if (STp->density == 1) in st_ioctl()
3784 else if (STp->density == 2) in st_ioctl()
3786 else if (STp->density == 3) in st_ioctl()
3788 if (STp->ready == ST_READY) in st_ioctl()
3790 if (STp->ready == ST_NO_TAPE) in st_ioctl()
3792 if (STps->at_sm) in st_ioctl()
3794 if (STm->do_async_writes || in st_ioctl()
3795 (STm->do_buffer_writes && STp->block_size != 0) || in st_ioctl()
3796 STp->drv_buffer != 0) in st_ioctl()
3798 if (STp->cleaning_req) in st_ioctl()
3805 STp->recover_reg = 0; /* Clear after read */ in st_ioctl()
3811 retval = (-EINVAL); in st_ioctl()
3822 mutex_unlock(&STp->lock); in st_ioctl()
3829 return -EPERM; in st_ioctl()
3835 retval = scsi_ioctl(STp->device, file->f_mode, cmd_in, p); in st_ioctl()
3838 STp->rew_at_close = 0; in st_ioctl()
3839 STp->ready = ST_NO_TAPE; in st_ioctl()
3844 mutex_unlock(&STp->lock); in st_ioctl()
3878 tb->frp_segs = 0; in new_tape_buffer()
3879 tb->use_sg = max_sg; in new_tape_buffer()
3880 tb->buffer_size = 0; in new_tape_buffer()
3882 tb->reserved_pages = kcalloc(max_sg, sizeof(struct page *), in new_tape_buffer()
3884 if (!tb->reserved_pages) { in new_tape_buffer()
3901 if (new_size <= STbuffer->buffer_size) in enlarge_buffer()
3904 if (STbuffer->buffer_size <= PAGE_SIZE) in enlarge_buffer()
3907 max_segs = STbuffer->use_sg; in enlarge_buffer()
3911 if (STbuffer->cleared) in enlarge_buffer()
3914 if (STbuffer->frp_segs) { in enlarge_buffer()
3915 order = STbuffer->reserved_page_order; in enlarge_buffer()
3923 STbuffer->reserved_page_order = order; in enlarge_buffer()
3932 for (segs = STbuffer->frp_segs, got = STbuffer->buffer_size; in enlarge_buffer()
3938 DEB(STbuffer->buffer_size = got); in enlarge_buffer()
3943 STbuffer->frp_segs += 1; in enlarge_buffer()
3945 STbuffer->buffer_size = got; in enlarge_buffer()
3946 STbuffer->reserved_pages[segs] = page; in enlarge_buffer()
3949 STbuffer->b_data = page_address(STbuffer->reserved_pages[0]); in enlarge_buffer()
3960 for (i=0; i < st_bp->frp_segs; i++) in clear_buffer()
3961 memset(page_address(st_bp->reserved_pages[i]), 0, in clear_buffer()
3962 PAGE_SIZE << st_bp->reserved_page_order); in clear_buffer()
3963 st_bp->cleared = 1; in clear_buffer()
3970 int i, order = STbuffer->reserved_page_order; in normalize_buffer()
3972 for (i = 0; i < STbuffer->frp_segs; i++) { in normalize_buffer()
3973 __free_pages(STbuffer->reserved_pages[i], order); in normalize_buffer()
3974 STbuffer->buffer_size -= (PAGE_SIZE << order); in normalize_buffer()
3976 STbuffer->frp_segs = 0; in normalize_buffer()
3977 STbuffer->sg_segs = 0; in normalize_buffer()
3978 STbuffer->reserved_page_order = 0; in normalize_buffer()
3979 STbuffer->map_data.offset = 0; in normalize_buffer()
3988 int length = PAGE_SIZE << st_bp->reserved_page_order; in append_to_buffer()
3990 for (i = 0, offset = st_bp->buffer_bytes; in append_to_buffer()
3991 i < st_bp->frp_segs && offset >= length; i++) in append_to_buffer()
3992 offset -= length; in append_to_buffer()
3993 if (i == st_bp->frp_segs) { /* Should never happen */ in append_to_buffer()
3995 return (-EIO); in append_to_buffer()
3997 for (; i < st_bp->frp_segs && do_count > 0; i++) { in append_to_buffer()
3998 struct page *page = st_bp->reserved_pages[i]; in append_to_buffer()
3999 cnt = length - offset < do_count ? length - offset : do_count; in append_to_buffer()
4002 return (-EFAULT); in append_to_buffer()
4003 do_count -= cnt; in append_to_buffer()
4004 st_bp->buffer_bytes += cnt; in append_to_buffer()
4009 return (-EIO); in append_to_buffer()
4020 int length = PAGE_SIZE << st_bp->reserved_page_order; in from_buffer()
4022 for (i = 0, offset = st_bp->read_pointer; in from_buffer()
4023 i < st_bp->frp_segs && offset >= length; i++) in from_buffer()
4024 offset -= length; in from_buffer()
4025 if (i == st_bp->frp_segs) { /* Should never happen */ in from_buffer()
4027 return (-EIO); in from_buffer()
4029 for (; i < st_bp->frp_segs && do_count > 0; i++) { in from_buffer()
4030 struct page *page = st_bp->reserved_pages[i]; in from_buffer()
4031 cnt = length - offset < do_count ? length - offset : do_count; in from_buffer()
4034 return (-EFAULT); in from_buffer()
4035 do_count -= cnt; in from_buffer()
4036 st_bp->buffer_bytes -= cnt; in from_buffer()
4037 st_bp->read_pointer += cnt; in from_buffer()
4042 return (-EIO); in from_buffer()
4053 int length = PAGE_SIZE << st_bp->reserved_page_order; in move_buffer_data()
4058 total=st_bp->buffer_bytes - offset; in move_buffer_data()
4059 for (src_seg=0; src_seg < st_bp->frp_segs; src_seg++) { in move_buffer_data()
4063 offset -= length; in move_buffer_data()
4066 st_bp->buffer_bytes = st_bp->read_pointer = total; in move_buffer_data()
4068 struct page *dpage = st_bp->reserved_pages[dst_seg]; in move_buffer_data()
4069 struct page *spage = st_bp->reserved_pages[src_seg]; in move_buffer_data()
4071 count = min(length - dst_offset, length - src_offset); in move_buffer_data()
4084 total -= count; in move_buffer_data()
4165 struct st_modedef *STm = &(tape->modes[mode]); in create_one_cdev()
4167 int dev_num = tape->index; in create_one_cdev()
4174 error = -ENOMEM; in create_one_cdev()
4177 cdev->owner = THIS_MODULE; in create_one_cdev()
4178 cdev->ops = &st_fops; in create_one_cdev()
4179 STm->cdevs[rew] = cdev; in create_one_cdev()
4183 pr_err("st%d: Can't add %s-rewind mode %d\n", dev_num, in create_one_cdev()
4189 i = mode << (4 - ST_NBR_MODE_BITS); in create_one_cdev()
4191 tape->name, st_formats[i]); in create_one_cdev()
4193 dev = device_create(&st_sysfs_class, &tape->device->sdev_gendev, in create_one_cdev()
4194 cdev_devno, &tape->modes[mode], "%s", name); in create_one_cdev()
4201 STm->devs[rew] = dev; in create_one_cdev()
4205 cdev_del(STm->cdevs[rew]); in create_one_cdev()
4207 STm->cdevs[rew] = NULL; in create_one_cdev()
4208 STm->devs[rew] = NULL; in create_one_cdev()
4224 return sysfs_create_link(&tape->device->sdev_gendev.kobj, in create_cdevs()
4225 &tape->modes[0].devs[0]->kobj, "tape"); in create_cdevs()
4231 sysfs_remove_link(&tape->device->sdev_gendev.kobj, "tape"); in remove_cdevs()
4233 struct st_modedef *STm = &(tape->modes[mode]); in remove_cdevs()
4235 if (STm->cdevs[rew]) in remove_cdevs()
4236 cdev_del(STm->cdevs[rew]); in remove_cdevs()
4237 if (STm->devs[rew]) in remove_cdevs()
4238 device_unregister(STm->devs[rew]); in remove_cdevs()
4245 struct scsi_device *SDp = to_scsi_device(dev); in st_probe() local
4252 if (SDp->type != TYPE_TAPE) in st_probe()
4253 return -ENODEV; in st_probe()
4254 if (st_incompatible(SDp)) { in st_probe()
4255 sdev_printk(KERN_INFO, SDp, in st_probe()
4257 sdev_printk(KERN_INFO, SDp, in st_probe()
4258 "please mail to linux-scsi@vger.kernel.org.\n"); in st_probe()
4259 return -ENODEV; in st_probe()
4262 scsi_autopm_get_device(SDp); in st_probe()
4263 i = queue_max_segments(SDp->request_queue); in st_probe()
4268 sdev_printk(KERN_ERR, SDp, in st_probe()
4276 sdev_printk(KERN_ERR, SDp, in st_probe()
4280 kref_init(&tpnt->kref); in st_probe()
4282 tpnt->device = SDp; in st_probe()
4283 if (SDp->scsi_level <= 2) in st_probe()
4284 tpnt->tape_type = MT_ISSCSI1; in st_probe()
4286 tpnt->tape_type = MT_ISSCSI2; in st_probe()
4288 tpnt->buffer = buffer; in st_probe()
4289 tpnt->buffer->last_SRpnt = NULL; in st_probe()
4291 tpnt->inited = 0; in st_probe()
4292 tpnt->dirty = 0; in st_probe()
4293 tpnt->in_use = 0; in st_probe()
4294 tpnt->drv_buffer = 1; /* Try buffering if no mode sense */ in st_probe()
4295 tpnt->use_pf = (SDp->scsi_level >= SCSI_2); in st_probe()
4296 tpnt->density = 0; in st_probe()
4297 tpnt->do_auto_lock = ST_AUTO_LOCK; in st_probe()
4298 tpnt->can_bsr = (SDp->scsi_level > 2 ? 1 : ST_IN_FILE_POS); /* BSR mandatory in SCSI3 */ in st_probe()
4299 tpnt->can_partitions = 0; in st_probe()
4300 tpnt->two_fm = ST_TWO_FM; in st_probe()
4301 tpnt->fast_mteom = ST_FAST_MTEOM; in st_probe()
4302 tpnt->scsi2_logical = ST_SCSI2LOGICAL; in st_probe()
4303 tpnt->sili = ST_SILI; in st_probe()
4304 tpnt->immediate = ST_NOWAIT; in st_probe()
4305 tpnt->immediate_filemark = 0; in st_probe()
4306 tpnt->default_drvbuffer = 0xff; /* No forced buffering */ in st_probe()
4307 tpnt->partition = 0; in st_probe()
4308 tpnt->new_partition = 0; in st_probe()
4309 tpnt->nbr_partitions = 0; in st_probe()
4310 blk_queue_rq_timeout(tpnt->device->request_queue, ST_TIMEOUT); in st_probe()
4311 tpnt->long_timeout = ST_LONG_TIMEOUT; in st_probe()
4312 tpnt->try_dio = try_direct_io; in st_probe()
4315 STm = &(tpnt->modes[i]); in st_probe()
4316 STm->defined = 0; in st_probe()
4317 STm->sysv = ST_SYSV; in st_probe()
4318 STm->defaults_for_writes = 0; in st_probe()
4319 STm->do_async_writes = ST_ASYNC_WRITES; in st_probe()
4320 STm->do_buffer_writes = ST_BUFFER_WRITES; in st_probe()
4321 STm->do_read_ahead = ST_READ_AHEAD; in st_probe()
4322 STm->default_compression = ST_DONT_TOUCH; in st_probe()
4323 STm->default_blksize = (-1); /* No forced size */ in st_probe()
4324 STm->default_density = (-1); /* No forced density */ in st_probe()
4325 STm->tape = tpnt; in st_probe()
4329 STps = &(tpnt->ps[i]); in st_probe()
4330 STps->rw = ST_IDLE; in st_probe()
4331 STps->eof = ST_NOEOF; in st_probe()
4332 STps->at_sm = 0; in st_probe()
4333 STps->last_block_valid = 0; in st_probe()
4334 STps->drv_block = (-1); in st_probe()
4335 STps->drv_file = (-1); in st_probe()
4338 tpnt->current_mode = 0; in st_probe()
4339 tpnt->modes[0].defined = 1; in st_probe()
4341 tpnt->density_changed = tpnt->compression_changed = in st_probe()
4342 tpnt->blksize_changed = 0; in st_probe()
4343 mutex_init(&tpnt->lock); in st_probe()
4354 tpnt->index = error; in st_probe()
4355 sprintf(tpnt->name, "st%d", tpnt->index); in st_probe()
4356 tpnt->stats = kzalloc(sizeof(struct scsi_tape_stats), GFP_KERNEL); in st_probe()
4357 if (tpnt->stats == NULL) { in st_probe()
4358 sdev_printk(KERN_ERR, SDp, in st_probe()
4369 scsi_autopm_put_device(SDp); in st_probe()
4371 sdev_printk(KERN_NOTICE, SDp, in st_probe()
4372 "Attached scsi tape %s\n", tpnt->name); in st_probe()
4373 sdev_printk(KERN_INFO, SDp, "%s: try direct i/o: %s (alignment %d B)\n", in st_probe()
4374 tpnt->name, tpnt->try_dio ? "yes" : "no", in st_probe()
4375 queue_dma_alignment(SDp->request_queue) + 1); in st_probe()
4381 kfree(tpnt->stats); in st_probe()
4384 idr_remove(&st_index_idr, tpnt->index); in st_probe()
4391 scsi_autopm_put_device(SDp); in st_probe()
4392 return -ENODEV; in st_probe()
4399 int index = tpnt->index; in st_remove()
4405 kref_put(&tpnt->kref, scsi_tape_release); in st_remove()
4414 * scsi_tape_release - Called to free the Scsi_Tape structure
4426 tpnt->device = NULL; in scsi_tape_release()
4428 if (tpnt->buffer) { in scsi_tape_release()
4429 normalize_buffer(tpnt->buffer); in scsi_tape_release()
4430 kfree(tpnt->buffer->reserved_pages); in scsi_tape_release()
4431 kfree(tpnt->buffer); in scsi_tape_release()
4434 kfree(tpnt->stats); in scsi_tape_release()
4501 /* The sysfs driver interface. Read-only at the moment */
4532 * other values have -EINVAL returned if they are passed in. in debug_flag_store()
4543 return -EINVAL; in debug_flag_store()
4572 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->defined); in defined_show()
4584 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_blksize); in default_blksize_show()
4597 fmt = STm->default_density >= 0 ? "0x%02x\n" : "%d\n"; in default_density_show()
4598 l = snprintf(buf, PAGE_SIZE, fmt, STm->default_density); in default_density_show()
4610 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_compression - 1); in default_compression_show()
4619 struct scsi_tape *STp = STm->tape; in options_show()
4623 options = STm->do_buffer_writes ? MT_ST_BUFFER_WRITES : 0; in options_show()
4624 options |= STm->do_async_writes ? MT_ST_ASYNC_WRITES : 0; in options_show()
4625 options |= STm->do_read_ahead ? MT_ST_READ_AHEAD : 0; in options_show()
4627 options |= STp->two_fm ? MT_ST_TWO_FM : 0; in options_show()
4628 options |= STp->fast_mteom ? MT_ST_FAST_MTEOM : 0; in options_show()
4629 options |= STm->defaults_for_writes ? MT_ST_DEF_WRITES : 0; in options_show()
4630 options |= STp->can_bsr ? MT_ST_CAN_BSR : 0; in options_show()
4631 options |= STp->omit_blklims ? MT_ST_NO_BLKLIMS : 0; in options_show()
4632 options |= STp->can_partitions ? MT_ST_CAN_PARTITIONS : 0; in options_show()
4633 options |= STp->scsi2_logical ? MT_ST_SCSI2LOGICAL : 0; in options_show()
4634 options |= STm->sysv ? MT_ST_SYSV : 0; in options_show()
4635 options |= STp->immediate ? MT_ST_NOWAIT : 0; in options_show()
4636 options |= STp->immediate_filemark ? MT_ST_NOWAIT_EOF : 0; in options_show()
4637 options |= STp->sili ? MT_ST_SILI : 0; in options_show()
4647 * read_cnt_show - return read count - count of reads made from tape drive
4658 (long long)atomic64_read(&STm->tape->stats->read_cnt)); in read_cnt_show()
4663 * read_byte_cnt_show - return read byte count - tape drives
4676 (long long)atomic64_read(&STm->tape->stats->read_byte_cnt)); in read_byte_cnt_show()
4681 * read_ns_show - return read ns - overall time spent waiting on reads in ns.
4692 (long long)atomic64_read(&STm->tape->stats->tot_read_time)); in read_ns_show()
4697 * write_cnt_show - write count - number of user calls
4709 (long long)atomic64_read(&STm->tape->stats->write_cnt)); in write_cnt_show()
4714 * write_byte_cnt_show - write byte count - raw count of
4726 (long long)atomic64_read(&STm->tape->stats->write_byte_cnt)); in write_byte_cnt_show()
4731 * write_ns_show - write ns - number of nanoseconds waiting on write
4743 (long long)atomic64_read(&STm->tape->stats->tot_write_time)); in write_ns_show()
4748 * in_flight_show - number of I/Os currently in flight -
4761 (long long)atomic64_read(&STm->tape->stats->in_flight)); in in_flight_show()
4766 * io_ns_show - io wait ns - this is the number of ns spent
4781 (long long)atomic64_read(&STm->tape->stats->tot_io_time)); in io_ns_show()
4786 * other_cnt_show - other io count - this is the number of
4800 (long long)atomic64_read(&STm->tape->stats->other_cnt)); in other_cnt_show()
4805 * resid_cnt_show - A count of the number of times we get a residual
4806 * count - this should indicate someone issuing reads larger than the
4818 (long long)atomic64_read(&STm->tape->stats->resid_cnt)); in resid_cnt_show()
4865 unsigned long end = (uaddr + count + PAGE_SIZE - 1) >> PAGE_SHIFT; in sgl_map_user_pages()
4867 const int nr_pages = end - start; in sgl_map_user_pages()
4870 struct rq_map_data *mdata = &STbp->map_data; in sgl_map_user_pages()
4874 return -EINVAL; in sgl_map_user_pages()
4878 return -ENOMEM; in sgl_map_user_pages()
4886 return -ENOMEM; in sgl_map_user_pages()
4904 mdata->offset = uaddr & ~PAGE_MASK; in sgl_map_user_pages()
4905 STbp->mapped_pages = pages; in sgl_map_user_pages()
4923 unpin_user_pages_dirty_lock(STbp->mapped_pages, nr_pages, dirtied); in sgl_unmap_user_pages()
4925 kfree(STbp->mapped_pages); in sgl_unmap_user_pages()
4926 STbp->mapped_pages = NULL; in sgl_unmap_user_pages()