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!"
166 /* Setting these non-zero may risk recognizing resets */
176 /* Remove mode bits and auto-rewind bit (7) */
178 (iminor(x) & ((1 << ST_MODE_SHIFT)-1)))
181 /* Construct the minor number from the device (d), mode (m), and non-rewind (n) data */
237 {"OnStream", "SC-", "", "osst"}, \
238 {"OnStream", "DI-", "", "osst"}, \
239 {"OnStream", "DP-", "", "osst"}, \
241 {"OnStream", "FW-", "", "osst"}
254 kref_get(&STp->kref); in scsi_tape_get()
256 if (!STp->device) in scsi_tape_get()
259 if (scsi_device_get(STp->device)) in scsi_tape_get()
265 kref_put(&STp->kref, scsi_tape_release); in scsi_tape_get()
275 struct scsi_device *sdev = STp->device; in scsi_tape_put()
278 kref_put(&STp->kref, scsi_tape_release); in scsi_tape_put()
291 /* {"XXX", "Yy-", "", NULL}, example */
301 for (rp=&(reject_list[0]); rp->vendor != NULL; rp++) in st_incompatible()
302 if (!strncmp(rp->vendor, SDp->vendor, strlen(rp->vendor)) && in st_incompatible()
303 !strncmp(rp->model, SDp->model, strlen(rp->model)) && in st_incompatible()
304 !strncmp(rp->rev, SDp->rev, strlen(rp->rev))) { in st_incompatible()
305 if (rp->driver_hint) in st_incompatible()
306 return rp->driver_hint; in st_incompatible()
315 sdev_prefix_printk(prefix, (t)->device, (t)->name, fmt, ##a)
326 const u8 *sense = SRpnt->sense; in st_analyze_sense()
328 s->have_sense = scsi_normalize_sense(SRpnt->sense, in st_analyze_sense()
329 SCSI_SENSE_BUFFERSIZE, &s->sense_hdr); in st_analyze_sense()
330 s->flags = 0; in st_analyze_sense()
332 if (s->have_sense) { in st_analyze_sense()
333 s->deferred = 0; in st_analyze_sense()
334 s->remainder_valid = in st_analyze_sense()
335 scsi_get_sense_info_fld(sense, SCSI_SENSE_BUFFERSIZE, &s->uremainder64); in st_analyze_sense()
338 s->deferred = 1; in st_analyze_sense()
341 s->fixed_format = 1; in st_analyze_sense()
342 s->flags = sense[2] & 0xe0; in st_analyze_sense()
345 s->deferred = 1; in st_analyze_sense()
348 s->fixed_format = 0; in st_analyze_sense()
350 s->flags = ucp ? (ucp[3] & 0xe0) : 0; in st_analyze_sense()
360 int result = SRpnt->result; in st_chk_result()
364 char *name = STp->name; in st_chk_result()
367 ctr = scsi_get_ua_por_ctr(STp->device); in st_chk_result()
368 if (ctr != STp->por_ctr) { in st_chk_result()
369 STp->por_ctr = ctr; in st_chk_result()
370 STp->pos_unknown = 1; /* ASC => power on / reset */ in st_chk_result()
377 cmdstatp = &STp->buffer->cmdstat; in st_chk_result()
380 if (cmdstatp->have_sense) in st_chk_result()
381 scode = STp->buffer->cmdstat.sense_hdr.sense_key; in st_chk_result()
389 SRpnt->cmd[0], SRpnt->cmd[1], SRpnt->cmd[2], in st_chk_result()
390 SRpnt->cmd[3], SRpnt->cmd[4], SRpnt->cmd[5]); in st_chk_result()
391 if (cmdstatp->have_sense) in st_chk_result()
392 __scsi_print_sense(STp->device, name, in st_chk_result()
393 SRpnt->sense, SCSI_SENSE_BUFFERSIZE); in st_chk_result()
396 if (!cmdstatp->have_sense) in st_chk_result()
400 else if (cmdstatp->have_sense && in st_chk_result()
406 SRpnt->cmd[0] != MODE_SENSE && in st_chk_result()
407 SRpnt->cmd[0] != TEST_UNIT_READY) { in st_chk_result()
409 __scsi_print_sense(STp->device, name, in st_chk_result()
410 SRpnt->sense, SCSI_SENSE_BUFFERSIZE); in st_chk_result()
414 if (cmdstatp->fixed_format && in st_chk_result()
415 STp->cln_mode >= EXTENDED_SENSE_START) { /* Only fixed format sense */ in st_chk_result()
416 if (STp->cln_sense_value) in st_chk_result()
417 STp->cleaning_req |= ((SRpnt->sense[STp->cln_mode] & in st_chk_result()
418 STp->cln_sense_mask) == STp->cln_sense_value); in st_chk_result()
420 STp->cleaning_req |= ((SRpnt->sense[STp->cln_mode] & in st_chk_result()
421 STp->cln_sense_mask) != 0); in st_chk_result()
423 if (cmdstatp->have_sense && in st_chk_result()
424 cmdstatp->sense_hdr.asc == 0 && cmdstatp->sense_hdr.ascq == 0x17) in st_chk_result()
425 STp->cleaning_req = 1; /* ASC and ASCQ => cleaning requested */ in st_chk_result()
426 if (cmdstatp->have_sense && scode == UNIT_ATTENTION && in st_chk_result()
427 cmdstatp->sense_hdr.asc == 0x29 && !STp->pos_unknown) { in st_chk_result()
428 STp->pos_unknown = 1; /* ASC => power on / reset */ in st_chk_result()
432 if (cmdstatp->have_sense && in st_chk_result()
435 && SRpnt->cmd[0] != WRITE_6 in st_chk_result()
436 && SRpnt->cmd[0] != WRITE_FILEMARKS in st_chk_result()
439 STp->recover_count++; in st_chk_result()
440 STp->recover_reg++; in st_chk_result()
444 if (SRpnt->cmd[0] == READ_6) in st_chk_result()
446 else if (SRpnt->cmd[0] == WRITE_6) in st_chk_result()
452 stp, STp->recover_count); in st_chk_result()
455 if (cmdstatp->flags == 0) in st_chk_result()
458 return (-EIO); in st_chk_result()
467 streq->stp = stp; in st_allocate_request()
472 stp->buffer->syscall_result = -EINTR; in st_allocate_request()
474 stp->buffer->syscall_result = -EBUSY; in st_allocate_request()
491 if (scmd->cmnd[0] == WRITE_6) { in st_do_stats()
492 now = ktime_sub(now, STp->stats->write_time); in st_do_stats()
493 atomic64_add(ktime_to_ns(now), &STp->stats->tot_write_time); in st_do_stats()
494 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
495 atomic64_inc(&STp->stats->write_cnt); in st_do_stats()
496 if (scmd->result) { in st_do_stats()
497 atomic64_add(atomic_read(&STp->stats->last_write_size) in st_do_stats()
498 - STp->buffer->cmdstat.residual, in st_do_stats()
499 &STp->stats->write_byte_cnt); in st_do_stats()
500 if (STp->buffer->cmdstat.residual > 0) in st_do_stats()
501 atomic64_inc(&STp->stats->resid_cnt); in st_do_stats()
503 atomic64_add(atomic_read(&STp->stats->last_write_size), in st_do_stats()
504 &STp->stats->write_byte_cnt); in st_do_stats()
505 } else if (scmd->cmnd[0] == READ_6) { in st_do_stats()
506 now = ktime_sub(now, STp->stats->read_time); in st_do_stats()
507 atomic64_add(ktime_to_ns(now), &STp->stats->tot_read_time); in st_do_stats()
508 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
509 atomic64_inc(&STp->stats->read_cnt); in st_do_stats()
510 if (scmd->result) { in st_do_stats()
511 atomic64_add(atomic_read(&STp->stats->last_read_size) in st_do_stats()
512 - STp->buffer->cmdstat.residual, in st_do_stats()
513 &STp->stats->read_byte_cnt); in st_do_stats()
514 if (STp->buffer->cmdstat.residual > 0) in st_do_stats()
515 atomic64_inc(&STp->stats->resid_cnt); in st_do_stats()
517 atomic64_add(atomic_read(&STp->stats->last_read_size), in st_do_stats()
518 &STp->stats->read_byte_cnt); in st_do_stats()
520 now = ktime_sub(now, STp->stats->other_time); in st_do_stats()
521 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
522 atomic64_inc(&STp->stats->other_cnt); in st_do_stats()
524 atomic64_dec(&STp->stats->in_flight); in st_do_stats()
531 struct st_request *SRpnt = req->end_io_data; in st_scsi_execute_end()
532 struct scsi_tape *STp = SRpnt->stp; in st_scsi_execute_end()
535 STp->buffer->cmdstat.midlevel_result = SRpnt->result = scmd->result; in st_scsi_execute_end()
536 STp->buffer->cmdstat.residual = scmd->resid_len; in st_scsi_execute_end()
540 tmp = SRpnt->bio; in st_scsi_execute_end()
541 if (scmd->sense_len) in st_scsi_execute_end()
542 memcpy(SRpnt->sense, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); in st_scsi_execute_end()
543 if (SRpnt->waiting) in st_scsi_execute_end()
544 complete(SRpnt->waiting); in st_scsi_execute_end()
556 struct rq_map_data *mdata = &SRpnt->stp->buffer->map_data; in st_scsi_execute()
558 struct scsi_tape *STp = SRpnt->stp; in st_scsi_execute()
561 req = scsi_alloc_request(SRpnt->stp->device->request_queue, in st_scsi_execute()
567 req->rq_flags |= RQF_QUIET; in st_scsi_execute()
569 mdata->null_mapped = 1; in st_scsi_execute()
572 err = blk_rq_map_user(req->q, req, mdata, NULL, bufflen, in st_scsi_execute()
580 atomic64_inc(&STp->stats->in_flight); in st_scsi_execute()
582 atomic_set(&STp->stats->last_write_size, bufflen); in st_scsi_execute()
583 STp->stats->write_time = ktime_get(); in st_scsi_execute()
585 atomic_set(&STp->stats->last_read_size, bufflen); in st_scsi_execute()
586 STp->stats->read_time = ktime_get(); in st_scsi_execute()
588 STp->stats->other_time = ktime_get(); in st_scsi_execute()
591 SRpnt->bio = req->bio; in st_scsi_execute()
592 scmd->cmd_len = COMMAND_SIZE(cmd[0]); in st_scsi_execute()
593 memcpy(scmd->cmnd, cmd, scmd->cmd_len); in st_scsi_execute()
594 req->timeout = timeout; in st_scsi_execute()
595 scmd->allowed = retries; in st_scsi_execute()
596 req->end_io = st_scsi_execute_end; in st_scsi_execute()
597 req->end_io_data = SRpnt; in st_scsi_execute()
611 struct rq_map_data *mdata = &STp->buffer->map_data; in st_do_scsi()
615 if (!do_wait && ((STp->buffer)->last_SRpnt)) { in st_do_scsi()
619 (STp->buffer)->syscall_result = (-EINTR); in st_do_scsi()
621 (STp->buffer)->syscall_result = (-EBUSY); in st_do_scsi()
634 (STp->buffer)->last_SRpnt = SRpnt; in st_do_scsi()
636 waiting = &STp->wait; in st_do_scsi()
638 SRpnt->waiting = waiting; in st_do_scsi()
640 if (STp->buffer->do_dio) { in st_do_scsi()
641 mdata->page_order = 0; in st_do_scsi()
642 mdata->nr_entries = STp->buffer->sg_segs; in st_do_scsi()
643 mdata->pages = STp->buffer->mapped_pages; in st_do_scsi()
645 mdata->page_order = STp->buffer->reserved_page_order; in st_do_scsi()
646 mdata->nr_entries = in st_do_scsi()
647 DIV_ROUND_UP(bytes, PAGE_SIZE << mdata->page_order); in st_do_scsi()
648 mdata->pages = STp->buffer->reserved_pages; in st_do_scsi()
649 mdata->offset = 0; in st_do_scsi()
652 memcpy(SRpnt->cmd, cmd, sizeof(SRpnt->cmd)); in st_do_scsi()
653 STp->buffer->cmdstat.have_sense = 0; in st_do_scsi()
654 STp->buffer->syscall_result = 0; in st_do_scsi()
660 (STp->buffer)->syscall_result = (-EBUSY); in st_do_scsi()
661 (STp->buffer)->last_SRpnt = NULL; in st_do_scsi()
664 SRpnt->waiting = NULL; in st_do_scsi()
665 (STp->buffer)->syscall_result = st_chk_result(STp, SRpnt); in st_do_scsi()
672 /* Handle the write-behind checking (waits for completion). Returns -ENOSPC if
673 write has been correct but EOM early warning reached, -EIO if write ended in
684 STbuffer = STp->buffer; in write_behind_check()
685 if (!STbuffer->writing) in write_behind_check()
689 if (STp->write_pending) in write_behind_check()
690 STp->nbr_waits++; in write_behind_check()
692 STp->nbr_finished++; in write_behind_check()
695 wait_for_completion(&(STp->wait)); in write_behind_check()
696 SRpnt = STbuffer->last_SRpnt; in write_behind_check()
697 STbuffer->last_SRpnt = NULL; in write_behind_check()
698 SRpnt->waiting = NULL; in write_behind_check()
700 (STp->buffer)->syscall_result = st_chk_result(STp, SRpnt); in write_behind_check()
703 STbuffer->buffer_bytes -= STbuffer->writing; in write_behind_check()
704 STps = &(STp->ps[STp->partition]); in write_behind_check()
705 if (STps->drv_block >= 0) { in write_behind_check()
706 if (STp->block_size == 0) in write_behind_check()
707 STps->drv_block++; in write_behind_check()
709 STps->drv_block += STbuffer->writing / STp->block_size; in write_behind_check()
712 cmdstatp = &STbuffer->cmdstat; in write_behind_check()
713 if (STbuffer->syscall_result) { in write_behind_check()
714 retval = -EIO; in write_behind_check()
715 if (cmdstatp->have_sense && !cmdstatp->deferred && in write_behind_check()
716 (cmdstatp->flags & SENSE_EOM) && in write_behind_check()
717 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in write_behind_check()
718 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR)) { in write_behind_check()
719 /* EOM at write-behind, has all data been written? */ in write_behind_check()
720 if (!cmdstatp->remainder_valid || in write_behind_check()
721 cmdstatp->uremainder64 == 0) in write_behind_check()
722 retval = -ENOSPC; in write_behind_check()
724 if (retval == -EIO) in write_behind_check()
725 STps->drv_block = -1; in write_behind_check()
727 STbuffer->writing = 0; in write_behind_check()
732 STbuffer->cmdstat.midlevel_result, retval);) /* end DEB */ in write_behind_check()
751 cmd[2] = cmd[3] = cmd[4] = 0xff; /* -1 filemarks */ in cross_eof()
758 STp->device->request_queue->rq_timeout, in cross_eof()
761 return (STp->buffer)->syscall_result; in cross_eof()
766 if ((STp->buffer)->cmdstat.midlevel_result != 0) in cross_eof()
771 return (STp->buffer)->syscall_result; in cross_eof()
789 if (STp->dirty == 1) { in st_flush_write_buffer()
791 transfer = STp->buffer->buffer_bytes; in st_flush_write_buffer()
797 blks = transfer / STp->block_size; in st_flush_write_buffer()
803 STp->device->request_queue->rq_timeout, in st_flush_write_buffer()
806 return (STp->buffer)->syscall_result; in st_flush_write_buffer()
808 STps = &(STp->ps[STp->partition]); in st_flush_write_buffer()
809 if ((STp->buffer)->syscall_result != 0) { in st_flush_write_buffer()
810 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush_write_buffer()
812 if (cmdstatp->have_sense && !cmdstatp->deferred && in st_flush_write_buffer()
813 (cmdstatp->flags & SENSE_EOM) && in st_flush_write_buffer()
814 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_flush_write_buffer()
815 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) && in st_flush_write_buffer()
816 (!cmdstatp->remainder_valid || in st_flush_write_buffer()
817 cmdstatp->uremainder64 == 0)) { /* All written at EOM early warning */ in st_flush_write_buffer()
818 STp->dirty = 0; in st_flush_write_buffer()
819 (STp->buffer)->buffer_bytes = 0; in st_flush_write_buffer()
820 if (STps->drv_block >= 0) in st_flush_write_buffer()
821 STps->drv_block += blks; in st_flush_write_buffer()
822 result = (-ENOSPC); in st_flush_write_buffer()
825 STps->drv_block = (-1); in st_flush_write_buffer()
826 result = (-EIO); in st_flush_write_buffer()
829 if (STps->drv_block >= 0) in st_flush_write_buffer()
830 STps->drv_block += blks; in st_flush_write_buffer()
831 STp->dirty = 0; in st_flush_write_buffer()
832 (STp->buffer)->buffer_bytes = 0; in st_flush_write_buffer()
848 if (STp->ready != ST_READY) in flush_buffer()
855 if (STp->pos_unknown) in flush_buffer()
856 return (-EIO); in flush_buffer()
858 STps = &(STp->ps[STp->partition]); in flush_buffer()
859 if (STps->rw == ST_WRITING) /* Writing */ in flush_buffer()
862 if (STp->block_size == 0) in flush_buffer()
865 backspace = ((STp->buffer)->buffer_bytes + in flush_buffer()
866 (STp->buffer)->read_pointer) / STp->block_size - in flush_buffer()
867 ((STp->buffer)->read_pointer + STp->block_size - 1) / in flush_buffer()
868 STp->block_size; in flush_buffer()
869 (STp->buffer)->buffer_bytes = 0; in flush_buffer()
870 (STp->buffer)->read_pointer = 0; in flush_buffer()
873 if (STps->eof == ST_FM_HIT) { in flush_buffer()
876 STps->eof = ST_NOEOF; in flush_buffer()
878 if (STps->drv_file >= 0) in flush_buffer()
879 STps->drv_file++; in flush_buffer()
880 STps->drv_block = 0; in flush_buffer()
885 } else if (STps->eof == ST_FM_HIT) { in flush_buffer()
886 if (STps->drv_file >= 0) in flush_buffer()
887 STps->drv_file++; in flush_buffer()
888 STps->drv_block = 0; in flush_buffer()
889 STps->eof = ST_NOEOF; in flush_buffer()
901 if (!STp->density_changed && in set_mode_densblk()
902 STm->default_density >= 0 && in set_mode_densblk()
903 STm->default_density != STp->density) { in set_mode_densblk()
904 arg = STm->default_density; in set_mode_densblk()
907 arg = STp->density; in set_mode_densblk()
909 if (!STp->blksize_changed && in set_mode_densblk()
910 STm->default_blksize >= 0 && in set_mode_densblk()
911 STm->default_blksize != STp->block_size) { in set_mode_densblk()
912 arg |= STm->default_blksize; in set_mode_densblk()
915 arg |= STp->block_size; in set_mode_densblk()
921 STm->default_blksize, STm->default_density); in set_mode_densblk()
923 return (-EINVAL); in set_mode_densblk()
936 retval = scsi_set_medium_removal(STp->device, in do_door_lock()
939 STp->door_locked = do_lock ? ST_LOCKED_EXPLICIT : ST_UNLOCKED; in do_door_lock()
941 STp->door_locked = ST_LOCK_FAILS; in do_door_lock()
952 STp->pos_unknown = 0; in reset_state()
954 STps = &(STp->ps[i]); in reset_state()
955 STps->rw = ST_IDLE; in reset_state()
956 STps->eof = ST_NOEOF; in reset_state()
957 STps->at_sm = 0; in reset_state()
958 STps->last_block_valid = 0; in reset_state()
959 STps->drv_block = -1; in reset_state()
960 STps->drv_file = -1; in reset_state()
962 if (STp->can_partitions) { in reset_state()
963 STp->partition = find_partition(STp); in reset_state()
964 if (STp->partition < 0) in reset_state()
965 STp->partition = 0; in reset_state()
985 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in test_ready()
993 STp->long_timeout, MAX_READY_RETRIES, 1); in test_ready()
996 retval = (STp->buffer)->syscall_result; in test_ready()
1000 if (cmdstatp->have_sense) { in test_ready()
1002 scode = cmdstatp->sense_hdr.sense_key; in test_ready()
1005 if (cmdstatp->sense_hdr.asc == 0x28) { /* New media */ in test_ready()
1014 retval = (-EIO); in test_ready()
1022 retval = (-EINTR); in test_ready()
1029 if ((STp->device)->scsi_level >= SCSI_2 && in test_ready()
1030 cmdstatp->sense_hdr.asc == 0x3a) /* Check ASC */ in test_ready()
1039 ctr = scsi_get_ua_new_media_ctr(STp->device); in test_ready()
1040 if (ctr != STp->new_media_ctr) { in test_ready()
1041 STp->new_media_ctr = ctr; in test_ready()
1046 retval = (STp->buffer)->syscall_result; in test_ready()
1051 if (STp->first_tur) { in test_ready()
1053 STp->pos_unknown = 0; in test_ready()
1054 STp->first_tur = 0; in test_ready()
1072 unsigned short st_flags = filp->f_flags; in check_tape()
1079 STp->ready = ST_READY; in check_tape()
1081 if (mode != STp->current_mode) { in check_tape()
1083 STp->current_mode, mode); in check_tape()
1085 STp->current_mode = mode; in check_tape()
1087 STm = &(STp->modes[STp->current_mode]); in check_tape()
1089 saved_cleaning = STp->cleaning_req; in check_tape()
1090 STp->cleaning_req = 0; in check_tape()
1092 do_wait = ((filp->f_flags & O_NONBLOCK) == 0); in check_tape()
1099 STp->pos_unknown = 0; in check_tape()
1100 STp->partition = STp->new_partition = 0; in check_tape()
1101 if (STp->can_partitions) in check_tape()
1102 STp->nbr_partitions = 1; /* This guess will be updated later in check_tape()
1105 STps = &(STp->ps[i]); in check_tape()
1106 STps->rw = ST_IDLE; in check_tape()
1107 STps->eof = ST_NOEOF; in check_tape()
1108 STps->at_sm = 0; in check_tape()
1109 STps->last_block_valid = 0; in check_tape()
1110 STps->drv_block = 0; in check_tape()
1111 STps->drv_file = 0; in check_tape()
1116 STp->cleaning_req |= saved_cleaning; in check_tape()
1120 STp->ready = ST_NO_TAPE; in check_tape()
1122 STp->ready = ST_NOT_READY; in check_tape()
1124 STp->density = 0; /* Clear the erroneous "residue" */ in check_tape()
1125 STp->write_prot = 0; in check_tape()
1126 STp->block_size = 0; in check_tape()
1127 STp->ps[0].drv_file = STp->ps[0].drv_block = (-1); in check_tape()
1128 STp->partition = STp->new_partition = 0; in check_tape()
1129 STp->door_locked = ST_UNLOCKED; in check_tape()
1134 if (STp->omit_blklims) in check_tape()
1135 STp->min_block = STp->max_block = (-1); in check_tape()
1141 STp->device->request_queue->rq_timeout, in check_tape()
1144 retval = (STp->buffer)->syscall_result; in check_tape()
1148 if (!SRpnt->result && !STp->buffer->cmdstat.have_sense) { in check_tape()
1149 STp->max_block = ((STp->buffer)->b_data[1] << 16) | in check_tape()
1150 ((STp->buffer)->b_data[2] << 8) | (STp->buffer)->b_data[3]; in check_tape()
1151 STp->min_block = ((STp->buffer)->b_data[4] << 8) | in check_tape()
1152 (STp->buffer)->b_data[5]; in check_tape()
1153 if ( DEB( debugging || ) !STp->inited) in check_tape()
1155 "Block limits %d - %d bytes.\n", in check_tape()
1156 STp->min_block, STp->max_block); in check_tape()
1158 STp->min_block = STp->max_block = (-1); in check_tape()
1168 STp->device->request_queue->rq_timeout, in check_tape()
1171 retval = (STp->buffer)->syscall_result; in check_tape()
1175 if ((STp->buffer)->syscall_result != 0) { in check_tape()
1177 STp->block_size = ST_DEFAULT_BLOCK; /* Educated guess (?) */ in check_tape()
1178 (STp->buffer)->syscall_result = 0; /* Prevent error propagation */ in check_tape()
1179 STp->drv_write_prot = 0; in check_tape()
1183 (STp->buffer)->b_data[0], in check_tape()
1184 (STp->buffer)->b_data[1], in check_tape()
1185 (STp->buffer)->b_data[2], in check_tape()
1186 (STp->buffer)->b_data[3]); in check_tape()
1188 if ((STp->buffer)->b_data[3] >= 8) { in check_tape()
1189 STp->drv_buffer = ((STp->buffer)->b_data[2] >> 4) & 7; in check_tape()
1190 STp->density = (STp->buffer)->b_data[4]; in check_tape()
1191 STp->block_size = (STp->buffer)->b_data[9] * 65536 + in check_tape()
1192 (STp->buffer)->b_data[10] * 256 + (STp->buffer)->b_data[11]; in check_tape()
1195 STp->density, in check_tape()
1196 (STp->buffer)->b_data[5] * 65536 + in check_tape()
1197 (STp->buffer)->b_data[6] * 256 + in check_tape()
1198 (STp->buffer)->b_data[7], in check_tape()
1199 STp->drv_buffer); in check_tape()
1201 STp->drv_write_prot = ((STp->buffer)->b_data[2] & 0x80) != 0; in check_tape()
1202 if (!STp->drv_buffer && STp->immediate_filemark) { in check_tape()
1204 "non-buffered tape: disabling " in check_tape()
1206 STp->immediate_filemark = 0; in check_tape()
1211 STp->inited = 1; in check_tape()
1213 if (STp->block_size > 0) in check_tape()
1214 (STp->buffer)->buffer_blocks = in check_tape()
1215 (STp->buffer)->buffer_size / STp->block_size; in check_tape()
1217 (STp->buffer)->buffer_blocks = 1; in check_tape()
1218 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in check_tape()
1221 STp->block_size, (STp->buffer)->buffer_size, in check_tape()
1222 (STp->buffer)->buffer_blocks); in check_tape()
1224 if (STp->drv_write_prot) { in check_tape()
1225 STp->write_prot = 1; in check_tape()
1232 retval = (-EROFS); in check_tape()
1237 if (STp->can_partitions && STp->nbr_partitions < 1) { in check_tape()
1242 if ((STp->partition = find_partition(STp)) < 0) { in check_tape()
1243 retval = STp->partition; in check_tape()
1246 STp->new_partition = STp->partition; in check_tape()
1247 STp->nbr_partitions = 1; /* This guess will be updated when necessary */ in check_tape()
1251 STp->density_changed = STp->blksize_changed = 0; in check_tape()
1252 STp->compression_changed = 0; in check_tape()
1253 if (!(STm->defaults_for_writes) && in check_tape()
1257 if (STp->default_drvbuffer != 0xff) { in check_tape()
1258 if (st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer)) in check_tape()
1262 STp->default_drvbuffer); in check_tape()
1277 int i, retval = (-EIO); in st_open()
1288 filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE); in st_open()
1291 return -ENXIO; in st_open()
1294 filp->private_data = STp; in st_open()
1297 if (STp->in_use) { in st_open()
1301 return (-EBUSY); in st_open()
1304 STp->in_use = 1; in st_open()
1306 STp->rew_at_close = STp->autorew_dev = (iminor(inode) & 0x80) == 0; in st_open()
1308 if (scsi_autopm_get_device(STp->device) < 0) { in st_open()
1309 retval = -EIO; in st_open()
1313 if (!scsi_block_when_processing_errors(STp->device)) { in st_open()
1314 retval = (-ENXIO); in st_open()
1319 if (!enlarge_buffer(STp->buffer, PAGE_SIZE)) { in st_open()
1322 retval = (-EOVERFLOW); in st_open()
1326 (STp->buffer)->cleared = 0; in st_open()
1327 (STp->buffer)->writing = 0; in st_open()
1328 (STp->buffer)->syscall_result = 0; in st_open()
1330 STp->write_prot = ((filp->f_flags & O_ACCMODE) == O_RDONLY); in st_open()
1332 STp->dirty = 0; in st_open()
1334 STps = &(STp->ps[i]); in st_open()
1335 STps->rw = ST_IDLE; in st_open()
1337 STp->try_dio_now = STp->try_dio; in st_open()
1338 STp->recover_count = 0; in st_open()
1339 DEB( STp->nbr_waits = STp->nbr_finished = 0; in st_open()
1340 STp->nbr_requests = STp->nbr_dio = STp->nbr_pages = 0; ) in st_open()
1345 if ((filp->f_flags & O_NONBLOCK) == 0 && in st_open()
1347 if (STp->ready == NO_TAPE) in st_open()
1348 retval = (-ENOMEDIUM); in st_open()
1350 retval = (-EIO); in st_open()
1356 normalize_buffer(STp->buffer); in st_open()
1358 STp->in_use = 0; in st_open()
1361 scsi_autopm_put_device(STp->device); in st_open()
1374 struct scsi_tape *STp = filp->private_data; in st_flush()
1375 struct st_modedef *STm = &(STp->modes[STp->current_mode]); in st_flush()
1376 struct st_partstat *STps = &(STp->ps[STp->partition]); in st_flush()
1381 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1383 if (result != 0 && result != (-ENOSPC)) in st_flush()
1387 if (STp->can_partitions && in st_flush()
1395 DEBC( if (STp->nbr_requests) in st_flush()
1398 "pages %d.\n", STp->nbr_requests, STp->nbr_dio, in st_flush()
1399 STp->nbr_pages)); in st_flush()
1401 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1402 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush()
1406 STp->nbr_waits, STp->nbr_finished); in st_flush()
1410 if (STp->immediate_filemark) in st_flush()
1412 cmd[4] = 1 + STp->two_fm; in st_flush()
1415 STp->device->request_queue->rq_timeout, in st_flush()
1418 result = (STp->buffer)->syscall_result; in st_flush()
1422 if (STp->buffer->syscall_result == 0 || in st_flush()
1423 (cmdstatp->have_sense && !cmdstatp->deferred && in st_flush()
1424 (cmdstatp->flags & SENSE_EOM) && in st_flush()
1425 (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_flush()
1426 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) && in st_flush()
1427 (!cmdstatp->remainder_valid || cmdstatp->uremainder64 == 0))) { in st_flush()
1431 if (STps->drv_file >= 0) in st_flush()
1432 STps->drv_file++; in st_flush()
1433 STps->drv_block = 0; in st_flush()
1434 if (STp->two_fm) in st_flush()
1436 STps->eof = ST_FM; in st_flush()
1444 result = (-EIO); in st_flush()
1448 } else if (!STp->rew_at_close) { in st_flush()
1449 STps = &(STp->ps[STp->partition]); in st_flush()
1450 if (!STm->sysv || STps->rw != ST_READING) { in st_flush()
1451 if (STp->can_bsr) in st_flush()
1453 else if (STps->eof == ST_FM_HIT) { in st_flush()
1456 if (STps->drv_file >= 0) in st_flush()
1457 STps->drv_file++; in st_flush()
1458 STps->drv_block = 0; in st_flush()
1459 STps->eof = ST_FM; in st_flush()
1461 STps->eof = ST_NOEOF; in st_flush()
1463 } else if ((STps->eof == ST_NOEOF && in st_flush()
1465 STps->eof == ST_FM_HIT) { in st_flush()
1466 if (STps->drv_file >= 0) in st_flush()
1467 STps->drv_file++; in st_flush()
1468 STps->drv_block = 0; in st_flush()
1469 STps->eof = ST_FM; in st_flush()
1474 if (STp->rew_at_close) { in st_flush()
1487 struct scsi_tape *STp = filp->private_data; in st_release()
1489 if (STp->door_locked == ST_LOCKED_AUTO) in st_release()
1492 normalize_buffer(STp->buffer); in st_release()
1494 STp->in_use = 0; in st_release()
1496 scsi_autopm_put_device(STp->device); in st_release()
1513 if (!scsi_block_when_processing_errors(STp->device)) { in rw_checks()
1514 retval = (-ENXIO); in rw_checks()
1518 if (STp->ready != ST_READY) { in rw_checks()
1519 if (STp->ready == ST_NO_TAPE) in rw_checks()
1520 retval = (-ENOMEDIUM); in rw_checks()
1522 retval = (-EIO); in rw_checks()
1526 if (! STp->modes[STp->current_mode].defined) { in rw_checks()
1527 retval = (-ENXIO); in rw_checks()
1536 if (STp->pos_unknown) { in rw_checks()
1537 retval = (-EIO); in rw_checks()
1545 if (!STp->in_use) { in rw_checks()
1548 retval = (-EIO); in rw_checks()
1552 if (STp->can_partitions && in rw_checks()
1556 if (STp->block_size == 0 && STp->max_block > 0 && in rw_checks()
1557 (count < STp->min_block || count > STp->max_block)) { in rw_checks()
1558 retval = (-EINVAL); in rw_checks()
1562 if (STp->do_auto_lock && STp->door_locked == ST_UNLOCKED && in rw_checks()
1564 STp->door_locked = ST_LOCKED_AUTO; in rw_checks()
1575 struct st_buffer *STbp = STp->buffer; in setup_buffering()
1578 i = STp->try_dio_now && try_rdio; in setup_buffering()
1580 i = STp->try_dio_now && try_wdio; in setup_buffering()
1583 STp->device->request_queue)) == 0) { in setup_buffering()
1584 i = sgl_map_user_pages(STbp, STbp->use_sg, (unsigned long)buf, in setup_buffering()
1587 STbp->do_dio = i; in setup_buffering()
1588 STbp->buffer_bytes = 0; /* can be used as transfer counter */ in setup_buffering()
1591 STbp->do_dio = 0; /* fall back to buffering with any error */ in setup_buffering()
1592 STbp->sg_segs = STbp->do_dio; in setup_buffering()
1594 if (STbp->do_dio) { in setup_buffering()
1595 STp->nbr_dio++; in setup_buffering()
1596 STp->nbr_pages += STbp->do_dio; in setup_buffering()
1600 STbp->do_dio = 0; in setup_buffering()
1601 DEB( STp->nbr_requests++; ) in setup_buffering()
1603 if (!STbp->do_dio) { in setup_buffering()
1604 if (STp->block_size) in setup_buffering()
1605 bufsize = STp->block_size > st_fixed_buffer_size ? in setup_buffering()
1606 STp->block_size : st_fixed_buffer_size; in setup_buffering()
1611 if (is_read && STp->sili && !STbp->cleared) in setup_buffering()
1615 if (bufsize > STbp->buffer_size && in setup_buffering()
1620 retval = (-EOVERFLOW); in setup_buffering()
1623 if (STp->block_size) in setup_buffering()
1624 STbp->buffer_blocks = bufsize / STp->block_size; in setup_buffering()
1637 STbp = STp->buffer; in release_buffering()
1638 if (STbp->do_dio) { in release_buffering()
1639 sgl_unmap_user_pages(STbp, STbp->do_dio, is_read); in release_buffering()
1640 STbp->do_dio = 0; in release_buffering()
1641 STbp->sg_segs = 0; in release_buffering()
1658 struct scsi_tape *STp = filp->private_data; in st_write()
1663 if (mutex_lock_interruptible(&STp->lock)) in st_write()
1664 return -ERESTARTSYS; in st_write()
1671 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_write()
1674 retval = (-EINVAL); in st_write()
1678 STm = &(STp->modes[STp->current_mode]); in st_write()
1679 STps = &(STp->ps[STp->partition]); in st_write()
1681 if (STp->write_prot) { in st_write()
1682 retval = (-EACCES); in st_write()
1687 if (STps->rw == ST_READING) { in st_write()
1691 STps->rw = ST_WRITING; in st_write()
1692 } else if (STps->rw != ST_WRITING && in st_write()
1693 STps->drv_file == 0 && STps->drv_block == 0) { in st_write()
1696 if (STm->default_compression != ST_DONT_TOUCH && in st_write()
1697 !(STp->compression_changed)) { in st_write()
1698 if (st_compression(STp, (STm->default_compression == ST_YES))) { in st_write()
1702 retval = (-EINVAL); in st_write()
1709 STbp = STp->buffer; in st_write()
1712 if (i == -ENOSPC) in st_write()
1713 STps->eof = ST_EOM_OK; in st_write()
1715 STps->eof = ST_EOM_ERROR; in st_write()
1718 if (STps->eof == ST_EOM_OK) { in st_write()
1719 STps->eof = ST_EOD_1; /* allow next write */ in st_write()
1720 retval = (-ENOSPC); in st_write()
1723 else if (STps->eof == ST_EOM_ERROR) { in st_write()
1724 retval = (-EIO); in st_write()
1730 if (STp->block_size != 0 && in st_write()
1731 !STbp->do_dio && in st_write()
1733 copy_from_user(&i, buf + count - 1, 1) != 0)) { in st_write()
1734 retval = (-EFAULT); in st_write()
1746 cmd[1] = (STp->block_size != 0); in st_write()
1748 STps->rw = ST_WRITING; in st_write()
1753 if (STbp->do_dio) { in st_write()
1757 if (STp->block_size == 0) in st_write()
1760 do_count = STbp->buffer_blocks * STp->block_size - in st_write()
1761 STbp->buffer_bytes; in st_write()
1772 count -= do_count; in st_write()
1775 async_write = STp->block_size == 0 && !STbp->do_dio && in st_write()
1776 STm->do_async_writes && STps->eof < ST_EOM_OK; in st_write()
1778 if (STp->block_size != 0 && STm->do_buffer_writes && in st_write()
1779 !(STp->try_dio_now && try_wdio) && STps->eof < ST_EOM_OK && in st_write()
1780 STbp->buffer_bytes < STbp->buffer_size) { in st_write()
1781 STp->dirty = 1; in st_write()
1788 if (STp->block_size == 0) in st_write()
1791 if (!STbp->do_dio) in st_write()
1792 blks = STbp->buffer_bytes; in st_write()
1795 blks /= STp->block_size; in st_write()
1796 transfer = blks * STp->block_size; in st_write()
1803 STp->device->request_queue->rq_timeout, in st_write()
1806 retval = STbp->syscall_result; in st_write()
1809 if (async_write && !STbp->syscall_result) { in st_write()
1810 STbp->writing = transfer; in st_write()
1811 STp->dirty = !(STbp->writing == in st_write()
1812 STbp->buffer_bytes); in st_write()
1814 DEB( STp->write_pending = 1; ) in st_write()
1818 if (STbp->syscall_result != 0) { in st_write()
1819 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_write()
1822 if (cmdstatp->have_sense && (cmdstatp->flags & SENSE_EOM)) { in st_write()
1823 scode = cmdstatp->sense_hdr.sense_key; in st_write()
1824 if (cmdstatp->remainder_valid) in st_write()
1825 undone = (int)cmdstatp->uremainder64; in st_write()
1826 else if (STp->block_size == 0 && in st_write()
1831 if (STp->block_size != 0) in st_write()
1832 undone *= STp->block_size; in st_write()
1836 b_point -= undone; in st_write()
1837 do_count -= undone; in st_write()
1838 if (STp->block_size) in st_write()
1839 blks = (transfer - undone) / STp->block_size; in st_write()
1840 STps->eof = ST_EOM_OK; in st_write()
1845 if (STp->block_size == 0 || in st_write()
1847 retval = (-ENOSPC); /* EOM within current request */ in st_write()
1854 if (!retry_eot && !cmdstatp->deferred && in st_write()
1856 move_buffer_data(STp->buffer, transfer - undone); in st_write()
1858 if (STps->drv_block >= 0) { in st_write()
1859 STps->drv_block += (transfer - undone) / in st_write()
1860 STp->block_size; in st_write()
1862 STps->eof = ST_EOM_OK; in st_write()
1866 STp->buffer->buffer_bytes); in st_write()
1872 count -= do_count; in st_write()
1874 STps->eof = ST_EOM_ERROR; in st_write()
1875 STps->drv_block = (-1); /* Too cautious? */ in st_write()
1876 retval = (-EIO); /* EOM for old data */ in st_write()
1883 STps->drv_block = (-1); /* Too cautious? */ in st_write()
1884 retval = STbp->syscall_result; in st_write()
1889 if (STps->drv_block >= 0) { in st_write()
1890 if (STp->block_size == 0) in st_write()
1891 STps->drv_block += (do_count > 0); in st_write()
1893 STps->drv_block += blks; in st_write()
1896 STbp->buffer_bytes = 0; in st_write()
1897 STp->dirty = 0; in st_write()
1901 retval = total - count; in st_write()
1906 if (STps->eof == ST_EOD_1) in st_write()
1907 STps->eof = ST_EOM_OK; in st_write()
1908 else if (STps->eof != ST_EOM_OK) in st_write()
1909 STps->eof = ST_NOEOF; in st_write()
1910 retval = total - count; in st_write()
1916 mutex_unlock(&STp->lock); in st_write()
1941 STm = &(STp->modes[STp->current_mode]); in read_tape()
1942 STps = &(STp->ps[STp->partition]); in read_tape()
1943 if (STps->eof == ST_FM_HIT) in read_tape()
1945 STbp = STp->buffer; in read_tape()
1947 if (STp->block_size == 0) in read_tape()
1950 if (!(STp->try_dio_now && try_rdio) && STm->do_read_ahead) { in read_tape()
1951 blks = (STp->buffer)->buffer_blocks; in read_tape()
1952 bytes = blks * STp->block_size; in read_tape()
1955 if (!STbp->do_dio && bytes > (STp->buffer)->buffer_size) in read_tape()
1956 bytes = (STp->buffer)->buffer_size; in read_tape()
1957 blks = bytes / STp->block_size; in read_tape()
1958 bytes = blks * STp->block_size; in read_tape()
1964 cmd[1] = (STp->block_size != 0); in read_tape()
1965 if (!cmd[1] && STp->sili) in read_tape()
1973 STp->device->request_queue->rq_timeout, in read_tape()
1978 return STbp->syscall_result; in read_tape()
1980 STbp->read_pointer = 0; in read_tape()
1981 STps->at_sm = 0; in read_tape()
1984 if (STbp->syscall_result) { in read_tape()
1985 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in read_tape()
1990 SRpnt->sense[0], SRpnt->sense[1], in read_tape()
1991 SRpnt->sense[2], SRpnt->sense[3], in read_tape()
1992 SRpnt->sense[4], SRpnt->sense[5], in read_tape()
1993 SRpnt->sense[6], SRpnt->sense[7]); in read_tape()
1994 if (cmdstatp->have_sense) { in read_tape()
1996 if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK) in read_tape()
1997 cmdstatp->flags &= 0xcf; /* No need for EOM in this case */ in read_tape()
1999 if (cmdstatp->flags != 0) { /* EOF, EOM, or ILI */ in read_tape()
2001 if (cmdstatp->remainder_valid) in read_tape()
2002 transfer = (int)cmdstatp->uremainder64; in read_tape()
2005 if (cmdstatp->sense_hdr.sense_key == MEDIUM_ERROR) { in read_tape()
2006 if (STp->block_size == 0) in read_tape()
2009 cmdstatp->flags &= ~SENSE_ILI; in read_tape()
2012 if (cmdstatp->flags & SENSE_ILI) { /* ILI */ in read_tape()
2013 if (STp->block_size == 0 && in read_tape()
2019 bytes - transfer, in read_tape()
2021 if (STps->drv_block >= 0) in read_tape()
2022 STps->drv_block += 1; in read_tape()
2023 STbp->buffer_bytes = 0; in read_tape()
2024 return (-ENOMEM); in read_tape()
2025 } else if (STp->block_size == 0) { in read_tape()
2026 STbp->buffer_bytes = bytes - transfer; in read_tape()
2034 if (STps->drv_block >= 0) in read_tape()
2035 STps->drv_block += blks - transfer + 1; in read_tape()
2037 return (-EIO); in read_tape()
2040 STbp->buffer_bytes = (blks - transfer) * in read_tape()
2041 STp->block_size; in read_tape()
2046 STbp->buffer_bytes); in read_tape()
2047 if (STps->drv_block >= 0) in read_tape()
2048 STps->drv_block += 1; in read_tape()
2050 return (-EIO); in read_tape()
2052 } else if (cmdstatp->flags & SENSE_FMK) { /* FM overrides EOM */ in read_tape()
2053 if (STps->eof != ST_FM_HIT) in read_tape()
2054 STps->eof = ST_FM_HIT; in read_tape()
2056 STps->eof = ST_EOD_2; in read_tape()
2057 if (STp->block_size == 0) in read_tape()
2058 STbp->buffer_bytes = 0; in read_tape()
2060 STbp->buffer_bytes = in read_tape()
2061 bytes - transfer * STp->block_size; in read_tape()
2064 STbp->buffer_bytes); in read_tape()
2065 } else if (cmdstatp->flags & SENSE_EOM) { in read_tape()
2066 if (STps->eof == ST_FM) in read_tape()
2067 STps->eof = ST_EOD_1; in read_tape()
2069 STps->eof = ST_EOM_OK; in read_tape()
2070 if (STp->block_size == 0) in read_tape()
2071 STbp->buffer_bytes = bytes - transfer; in read_tape()
2073 STbp->buffer_bytes = in read_tape()
2074 bytes - transfer * STp->block_size; in read_tape()
2078 STbp->buffer_bytes); in read_tape()
2084 STps->drv_block = (-1); in read_tape()
2085 if (STps->eof == ST_FM && in read_tape()
2086 cmdstatp->sense_hdr.sense_key == BLANK_CHECK) { in read_tape()
2090 STps->eof = ST_EOD_2; /* First BLANK_CHECK after FM */ in read_tape()
2092 retval = (-EIO); in read_tape()
2095 if (STbp->buffer_bytes < 0) /* Caused by bogus sense data */ in read_tape()
2096 STbp->buffer_bytes = 0; in read_tape()
2099 else { /* Non-extended sense */ in read_tape()
2100 retval = STbp->syscall_result; in read_tape()
2106 STbp->buffer_bytes = bytes; in read_tape()
2107 if (STp->sili) /* In fixed block mode residual is always zero here */ in read_tape()
2108 STbp->buffer_bytes -= STp->buffer->cmdstat.residual; in read_tape()
2111 if (STps->drv_block >= 0) { in read_tape()
2112 if (STp->block_size == 0) in read_tape()
2113 STps->drv_block++; in read_tape()
2115 STps->drv_block += STbp->buffer_bytes / STp->block_size; in read_tape()
2130 struct scsi_tape *STp = filp->private_data; in st_read()
2133 struct st_buffer *STbp = STp->buffer; in st_read()
2135 if (mutex_lock_interruptible(&STp->lock)) in st_read()
2136 return -ERESTARTSYS; in st_read()
2142 STm = &(STp->modes[STp->current_mode]); in st_read()
2143 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_read()
2144 if (!STm->do_read_ahead) { in st_read()
2145 retval = (-EINVAL); /* Read must be integral number of blocks */ in st_read()
2148 STp->try_dio_now = 0; /* Direct i/o can't handle split blocks */ in st_read()
2151 STps = &(STp->ps[STp->partition]); in st_read()
2152 if (STps->rw == ST_WRITING) { in st_read()
2156 STps->rw = ST_READING; in st_read()
2159 if (debugging && STps->eof != ST_NOEOF) in st_read()
2162 STps->eof, STbp->buffer_bytes); in st_read()
2168 do_dio = STbp->do_dio; in st_read()
2170 if (STbp->buffer_bytes == 0 && in st_read()
2171 STps->eof >= ST_EOD_1) { in st_read()
2172 if (STps->eof < ST_EOD) { in st_read()
2173 STps->eof += 1; in st_read()
2177 retval = (-EIO); /* EOM or Blank Check */ in st_read()
2186 copy_from_user(&i, buf + count - 1, 1) != 0 || in st_read()
2187 copy_to_user(buf + count - 1, &i, 1) != 0) { in st_read()
2188 retval = (-EFAULT); in st_read()
2193 STps->rw = ST_READING; in st_read()
2200 if (STbp->buffer_bytes == 0) { in st_read()
2201 special = read_tape(STp, count - total, &SRpnt); in st_read()
2209 if (STbp->buffer_bytes > 0) { in st_read()
2211 if (debugging && STps->eof != ST_NOEOF) in st_read()
2214 STps->eof, STbp->buffer_bytes, in st_read()
2215 (int)(count - total)); in st_read()
2217 transfer = STbp->buffer_bytes < count - total ? in st_read()
2218 STbp->buffer_bytes : count - total; in st_read()
2230 if (STp->block_size == 0) in st_read()
2238 if (STps->eof == ST_FM_HIT) { in st_read()
2239 STps->eof = ST_FM; in st_read()
2240 STps->drv_block = 0; in st_read()
2241 if (STps->drv_file >= 0) in st_read()
2242 STps->drv_file++; in st_read()
2243 } else if (STps->eof == ST_EOD_1) { in st_read()
2244 STps->eof = ST_EOD_2; in st_read()
2245 STps->drv_block = 0; in st_read()
2246 if (STps->drv_file >= 0) in st_read()
2247 STps->drv_file++; in st_read()
2248 } else if (STps->eof == ST_EOD_2) in st_read()
2249 STps->eof = ST_EOD; in st_read()
2250 } else if (STps->eof == ST_FM) in st_read()
2251 STps->eof = ST_NOEOF; in st_read()
2261 STbp->buffer_bytes = 0; in st_read()
2263 mutex_unlock(&STp->lock); in st_read()
2278 STp->current_mode, STm->do_buffer_writes, in DEB()
2279 STm->do_async_writes, STm->do_read_ahead); in DEB()
2283 STp->can_bsr, STp->two_fm, STp->fast_mteom, in DEB()
2284 STp->do_auto_lock); in DEB()
2287 "partitions: %d, s2 log: %d\n", in DEB()
2288 STm->defaults_for_writes, STp->omit_blklims, in DEB()
2289 STp->can_partitions, STp->scsi2_logical); in DEB()
2293 STm->sysv, STp->immediate, STp->sili, in DEB()
2294 STp->immediate_filemark); in DEB()
2309 STm = &(STp->modes[STp->current_mode]);
2310 if (!STm->defined) {
2311 cd0 = STm->cdevs[0];
2312 cd1 = STm->cdevs[1];
2313 d0 = STm->devs[0];
2314 d1 = STm->devs[1];
2315 memcpy(STm, &(STp->modes[0]), sizeof(struct st_modedef));
2316 STm->cdevs[0] = cd0;
2317 STm->cdevs[1] = cd1;
2318 STm->devs[0] = d0;
2319 STm->devs[1] = d1;
2322 STp->current_mode);
2327 STm->do_buffer_writes = (options & MT_ST_BUFFER_WRITES) != 0;
2328 STm->do_async_writes = (options & MT_ST_ASYNC_WRITES) != 0;
2329 STm->defaults_for_writes = (options & MT_ST_DEF_WRITES) != 0;
2330 STm->do_read_ahead = (options & MT_ST_READ_AHEAD) != 0;
2331 STp->two_fm = (options & MT_ST_TWO_FM) != 0;
2332 STp->fast_mteom = (options & MT_ST_FAST_MTEOM) != 0;
2333 STp->do_auto_lock = (options & MT_ST_AUTO_LOCK) != 0;
2334 STp->can_bsr = (options & MT_ST_CAN_BSR) != 0;
2335 STp->omit_blklims = (options & MT_ST_NO_BLKLIMS) != 0;
2336 if ((STp->device)->scsi_level >= SCSI_2)
2337 STp->can_partitions = (options & MT_ST_CAN_PARTITIONS) != 0;
2338 STp->scsi2_logical = (options & MT_ST_SCSI2LOGICAL) != 0;
2339 STp->immediate = (options & MT_ST_NOWAIT) != 0;
2340 STp->immediate_filemark = (options & MT_ST_NOWAIT_EOF) != 0;
2341 STm->sysv = (options & MT_ST_SYSV) != 0;
2342 STp->sili = (options & MT_ST_SILI) != 0;
2348 STm->do_buffer_writes = value;
2350 STm->do_async_writes = value;
2352 STm->defaults_for_writes = value;
2354 STm->do_read_ahead = value;
2356 STp->two_fm = value;
2358 STp->fast_mteom = value;
2360 STp->do_auto_lock = value;
2362 STp->can_bsr = value;
2364 STp->omit_blklims = value;
2365 if ((STp->device)->scsi_level >= SCSI_2 &&
2367 STp->can_partitions = value;
2369 STp->scsi2_logical = value;
2371 STp->immediate = value;
2373 STp->immediate_filemark = value;
2375 STm->sysv = value;
2377 STp->sili = value;
2387 STm->default_blksize = (-1);
2390 STm->default_blksize = value;
2392 "%d bytes.\n", STm->default_blksize);
2393 if (STp->ready == ST_READY) {
2394 STp->blksize_changed = 0;
2401 STp->long_timeout = (value & ~MT_ST_SET_LONG_TIMEOUT) * HZ;
2405 blk_queue_rq_timeout(STp->device->request_queue,
2415 return (-EINVAL);
2416 STp->cln_mode = value;
2417 STp->cln_sense_mask = (options >> 8) & 0xff;
2418 STp->cln_sense_value = (options >> 16) & 0xff;
2421 value, STp->cln_sense_mask, STp->cln_sense_value);
2427 STm->default_density = (-1);
2431 STm->default_density = value & 0xff;
2433 STm->default_density);
2434 if (STp->ready == ST_READY) {
2435 STp->density_changed = 0;
2441 STp->default_drvbuffer = 0xff;
2445 STp->default_drvbuffer = value & 7;
2448 STp->default_drvbuffer);
2449 if (STp->ready == ST_READY)
2450 st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer);
2454 STm->default_compression = ST_DONT_TOUCH;
2459 STp->c_algo = (value & 0xff00) >> 8;
2462 STp->c_algo);
2465 STm->default_compression = (value & 1 ? ST_YES : ST_NO);
2469 if (STp->ready == ST_READY) {
2470 STp->compression_changed = 0;
2471 st_compression(STp, (STm->default_compression == ST_YES));
2477 return (-EIO);
2517 STp->device->request_queue->rq_timeout, 0, 1); in read_mode_page()
2519 return (STp->buffer)->syscall_result; in read_mode_page()
2523 return STp->buffer->syscall_result; in read_mode_page()
2528 in the buffer is correctly formatted. The long timeout is used if slow is non-zero. */
2539 pgo = MODE_HEADER_LENGTH + (STp->buffer)->b_data[MH_OFF_BDESCS_LENGTH]; in write_mode_page()
2540 cmd[4] = pgo + (STp->buffer)->b_data[pgo + MP_OFF_PAGE_LENGTH] + 2; in write_mode_page()
2543 (STp->buffer)->b_data[MH_OFF_DATA_LENGTH] = 0; in write_mode_page()
2544 (STp->buffer)->b_data[MH_OFF_MEDIUM_TYPE] = 0; in write_mode_page()
2545 (STp->buffer)->b_data[MH_OFF_DEV_SPECIFIC] &= ~MH_BIT_WP; in write_mode_page()
2546 (STp->buffer)->b_data[pgo + MP_OFF_PAGE_NBR] &= MP_MSK_PAGE_NBR; in write_mode_page()
2549 STp->long_timeout : STp->device->request_queue->rq_timeout; in write_mode_page()
2553 return (STp->buffer)->syscall_result; in write_mode_page()
2557 return STp->buffer->syscall_result; in write_mode_page()
2574 The block descriptors are read and written because Sony SDT-7000 does not
2582 unsigned char *b_data = (STp->buffer)->b_data; in st_compression()
2584 if (STp->ready != ST_READY) in st_compression()
2585 return (-EIO); in st_compression()
2591 return (-EIO); in st_compression()
2601 return (-EIO); in st_compression()
2607 if (STp->c_algo != 0) in st_compression()
2608 b_data[mpoffs + CP_OFF_C_ALGO] = STp->c_algo; in st_compression()
2612 if (STp->c_algo != 0) in st_compression()
2619 return (-EIO); in st_compression()
2623 STp->compression_changed = 1; in st_compression()
2631 int retval = (-EIO), timeout; in do_load_unload()
2636 if (STp->ready != ST_READY && !load_code) { in do_load_unload()
2637 if (STp->ready == ST_NO_TAPE) in do_load_unload()
2638 return (-ENOMEDIUM); in do_load_unload()
2640 return (-EIO); in do_load_unload()
2654 load_code - MT_ST_HPLOADER_OFFSET); in do_load_unload()
2655 cmd[3] = load_code - MT_ST_HPLOADER_OFFSET; /* MediaID field of C1553A */ in do_load_unload()
2657 if (STp->immediate) { in do_load_unload()
2659 timeout = STp->device->request_queue->rq_timeout; in do_load_unload()
2662 timeout = STp->long_timeout; in do_load_unload()
2674 return (STp->buffer)->syscall_result; in do_load_unload()
2676 retval = (STp->buffer)->syscall_result; in do_load_unload()
2682 STp->rew_at_close = 0; in do_load_unload()
2683 STp->ready = ST_NO_TAPE; in do_load_unload()
2686 STp->rew_at_close = STp->autorew_dev; in do_load_unload()
2693 STps = &(STp->ps[STp->partition]); in do_load_unload()
2694 STps->drv_file = STps->drv_block = (-1); in do_load_unload()
2705 s32 sc; in deb_space_print() local
2710 sc = sign_extend32(get_unaligned_be24(&cmd[2]), 23); in deb_space_print()
2712 sc = -sc; in deb_space_print()
2714 direction ? "backward" : "forward", sc, units); in deb_space_print()
2736 WARN_ON(STp->buffer->do_dio != 0); in st_int_ioctl()
2737 if (STp->ready != ST_READY) { in st_int_ioctl()
2738 if (STp->ready == ST_NO_TAPE) in st_int_ioctl()
2739 return (-ENOMEDIUM); in st_int_ioctl()
2741 return (-EIO); in st_int_ioctl()
2743 timeout = STp->long_timeout; in st_int_ioctl()
2744 STps = &(STp->ps[STp->partition]); in st_int_ioctl()
2745 fileno = STps->drv_file; in st_int_ioctl()
2746 blkno = STps->drv_block; in st_int_ioctl()
2747 at_sm = STps->at_sm; in st_int_ioctl()
2772 ltmp = (-arg); in st_int_ioctl()
2778 fileno -= arg; in st_int_ioctl()
2779 blkno = (-1); /* We can't know the block number */ in st_int_ioctl()
2796 ltmp = (-arg); in st_int_ioctl()
2802 blkno -= arg; in st_int_ioctl()
2813 blkno = fileno = (-1); in st_int_ioctl()
2820 ltmp = (-arg); in st_int_ioctl()
2826 blkno = fileno = (-1); in st_int_ioctl()
2833 if (STp->write_prot) in st_int_ioctl()
2834 return (-EACCES); in st_int_ioctl()
2839 (cmd_in == MTWEOF && STp->immediate_filemark)) in st_int_ioctl()
2844 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2866 if (STp->immediate) { in st_int_ioctl()
2868 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2878 if (STp->immediate) { in st_int_ioctl()
2880 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2887 if (!STp->fast_mteom) { in st_int_ioctl()
2890 fileno = STps->drv_file; in st_int_ioctl()
2891 if (STps->eof >= ST_EOD_1) in st_int_ioctl()
2898 fileno = (-1); in st_int_ioctl()
2902 blkno = -1; in st_int_ioctl()
2906 if (STp->write_prot) in st_int_ioctl()
2907 return (-EACCES); in st_int_ioctl()
2909 cmd[1] = (arg ? 1 : 0); /* Long erase with non-zero argument */ in st_int_ioctl()
2910 if (STp->immediate) { in st_int_ioctl()
2912 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2915 timeout = STp->long_timeout * 8; in st_int_ioctl()
2924 if (STp->dirty || (STp->buffer)->buffer_bytes != 0) in st_int_ioctl()
2925 return (-EIO); /* Not allowed if data in buffer */ in st_int_ioctl()
2928 STp->max_block > 0 && in st_int_ioctl()
2929 ((arg & MT_ST_BLKSIZE_MASK) < STp->min_block || in st_int_ioctl()
2930 (arg & MT_ST_BLKSIZE_MASK) > STp->max_block)) { in st_int_ioctl()
2932 return (-EINVAL); in st_int_ioctl()
2935 if ((STp->use_pf & USE_PF)) in st_int_ioctl()
2940 memset((STp->buffer)->b_data, 0, 12); in st_int_ioctl()
2942 (STp->buffer)->b_data[2] = (arg & 7) << 4; in st_int_ioctl()
2944 (STp->buffer)->b_data[2] = in st_int_ioctl()
2945 STp->drv_buffer << 4; in st_int_ioctl()
2946 (STp->buffer)->b_data[3] = 8; /* block descriptor length */ in st_int_ioctl()
2948 (STp->buffer)->b_data[4] = arg; in st_int_ioctl()
2949 STp->density_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2950 STp->changed_density = arg; in st_int_ioctl()
2952 (STp->buffer)->b_data[4] = arg >> 24; in st_int_ioctl()
2954 (STp->buffer)->b_data[4] = STp->density; in st_int_ioctl()
2958 STp->blksize_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2959 STp->changed_blksize = arg; in st_int_ioctl()
2962 ltmp = STp->block_size; in st_int_ioctl()
2963 (STp->buffer)->b_data[9] = (ltmp >> 16); in st_int_ioctl()
2964 (STp->buffer)->b_data[10] = (ltmp >> 8); in st_int_ioctl()
2965 (STp->buffer)->b_data[11] = ltmp; in st_int_ioctl()
2966 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2971 (STp->buffer)->b_data[9] * 65536 + in st_int_ioctl()
2972 (STp->buffer)->b_data[10] * 256 + in st_int_ioctl()
2973 (STp->buffer)->b_data[11]); in st_int_ioctl()
2977 (STp->buffer)->b_data[4]); in st_int_ioctl()
2981 ((STp->buffer)->b_data[2] >> 4) & 7); in st_int_ioctl()
2985 return (-ENOSYS); in st_int_ioctl()
2991 return (STp->buffer)->syscall_result; in st_int_ioctl()
2993 ioctl_result = (STp->buffer)->syscall_result; in st_int_ioctl()
2998 STps->drv_block = blkno; in st_int_ioctl()
2999 STps->drv_file = fileno; in st_int_ioctl()
3000 STps->at_sm = at_sm; in st_int_ioctl()
3008 STp->block_size = arg & MT_ST_BLKSIZE_MASK; in st_int_ioctl()
3009 if (STp->block_size != 0) { in st_int_ioctl()
3010 (STp->buffer)->buffer_blocks = in st_int_ioctl()
3011 (STp->buffer)->buffer_size / STp->block_size; in st_int_ioctl()
3013 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in st_int_ioctl()
3015 STp->density = arg >> MT_ST_DENSITY_SHIFT; in st_int_ioctl()
3017 STp->drv_buffer = (arg & 7); in st_int_ioctl()
3019 STp->density = arg; in st_int_ioctl()
3022 STps->eof = ST_EOD; in st_int_ioctl()
3024 STps->eof = ST_FM; in st_int_ioctl()
3026 STps->eof = ST_NOEOF; in st_int_ioctl()
3029 STps->rw = ST_IDLE; /* prevent automatic WEOF at close */ in st_int_ioctl()
3032 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_int_ioctl()
3034 if (cmdstatp->flags & SENSE_EOM) { in st_int_ioctl()
3037 STps->eof = ST_EOM_OK; in st_int_ioctl()
3038 STps->drv_block = 0; in st_int_ioctl()
3041 if (cmdstatp->remainder_valid) in st_int_ioctl()
3042 undone = (int)cmdstatp->uremainder64; in st_int_ioctl()
3047 cmdstatp->have_sense && in st_int_ioctl()
3048 (cmdstatp->flags & SENSE_EOM)) { in st_int_ioctl()
3049 if (cmdstatp->sense_hdr.sense_key == NO_SENSE || in st_int_ioctl()
3050 cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) { in st_int_ioctl()
3052 STps->eof = ST_NOEOF; in st_int_ioctl()
3055 fileno -= undone; in st_int_ioctl()
3057 STps->eof = ST_NOEOF; in st_int_ioctl()
3059 STps->drv_file = fileno; in st_int_ioctl()
3062 STps->drv_file = fileno - undone; in st_int_ioctl()
3064 STps->drv_file = fileno; in st_int_ioctl()
3065 STps->drv_block = -1; in st_int_ioctl()
3066 STps->eof = ST_NOEOF; in st_int_ioctl()
3069 undone = (-undone); in st_int_ioctl()
3070 if (STps->drv_file >= 0) in st_int_ioctl()
3071 STps->drv_file = fileno + undone; in st_int_ioctl()
3072 STps->drv_block = 0; in st_int_ioctl()
3073 STps->eof = ST_NOEOF; in st_int_ioctl()
3075 if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */ in st_int_ioctl()
3076 if (STps->drv_file >= 0) in st_int_ioctl()
3077 STps->drv_file++; in st_int_ioctl()
3078 STps->drv_block = 0; in st_int_ioctl()
3079 STps->eof = ST_FM; in st_int_ioctl()
3082 STps->drv_block = blkno - undone; in st_int_ioctl()
3084 STps->drv_block = (-1); in st_int_ioctl()
3085 STps->eof = ST_NOEOF; in st_int_ioctl()
3088 if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */ in st_int_ioctl()
3089 STps->drv_file--; in st_int_ioctl()
3090 STps->drv_block = (-1); in st_int_ioctl()
3093 undone = (-undone); in st_int_ioctl()
3094 if (STps->drv_block >= 0) in st_int_ioctl()
3095 STps->drv_block = blkno + undone; in st_int_ioctl()
3097 STps->eof = ST_NOEOF; in st_int_ioctl()
3099 STps->drv_file = (-1); in st_int_ioctl()
3100 STps->drv_block = (-1); in st_int_ioctl()
3101 STps->eof = ST_EOD; in st_int_ioctl()
3106 if (cmdstatp->sense_hdr.sense_key == ILLEGAL_REQUEST && in st_int_ioctl()
3107 cmdstatp->sense_hdr.asc == 0x24 && in st_int_ioctl()
3108 (STp->device)->scsi_level <= SCSI_2 && in st_int_ioctl()
3109 !(STp->use_pf & PF_TESTED)) { in st_int_ioctl()
3112 STp->use_pf = (STp->use_pf ^ USE_PF) | PF_TESTED; in st_int_ioctl()
3118 STps->eof = ST_NOEOF; in st_int_ioctl()
3120 if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK) in st_int_ioctl()
3121 STps->eof = ST_EOD; in st_int_ioctl()
3141 if (STp->ready != ST_READY) in get_location()
3142 return (-EIO); in get_location()
3145 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3150 if (!logical && !STp->scsi2_logical) in get_location()
3154 STp->device->request_queue->rq_timeout, in get_location()
3157 return (STp->buffer)->syscall_result; in get_location()
3159 if ((STp->buffer)->syscall_result != 0 || in get_location()
3160 (STp->device->scsi_level >= SCSI_2 && in get_location()
3161 ((STp->buffer)->b_data[0] & 4) != 0)) { in get_location()
3164 result = (-EIO); in get_location()
3167 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3168 *block = ((STp->buffer)->b_data[0] << 16) in get_location()
3169 + ((STp->buffer)->b_data[1] << 8) in get_location()
3170 + (STp->buffer)->b_data[2]; in get_location()
3173 *block = ((STp->buffer)->b_data[4] << 24) in get_location()
3174 + ((STp->buffer)->b_data[5] << 16) in get_location()
3175 + ((STp->buffer)->b_data[6] << 8) in get_location()
3176 + (STp->buffer)->b_data[7]; in get_location()
3177 *partition = (STp->buffer)->b_data[1]; in get_location()
3178 if (((STp->buffer)->b_data[0] & 0x80) && in get_location()
3179 (STp->buffer)->b_data[1] == 0) /* BOP of partition 0 */ in get_location()
3180 STp->ps[0].drv_block = STp->ps[0].drv_file = 0; in get_location()
3204 if (STp->ready != ST_READY) in set_location()
3205 return (-EIO); in set_location()
3206 timeout = STp->long_timeout; in set_location()
3207 STps = &(STp->ps[STp->partition]); in set_location()
3212 return (-EIO); ) in set_location()
3215 if ((!STp->can_partitions && partition != 0) || in set_location()
3217 return (-EINVAL); in set_location()
3218 if (partition != STp->partition) { in set_location()
3220 STps->last_block_valid = 0; in set_location()
3222 STps->last_block_valid = 1; in set_location()
3223 STps->last_block_visited = blk; in set_location()
3226 blk, STp->partition); in set_location()
3231 if ((STp->device)->scsi_level < SCSI_2) { in set_location()
3243 if (!logical && !STp->scsi2_logical) in set_location()
3245 if (STp->partition != partition) { in set_location()
3249 "from %d to %d\n", STp->partition, in set_location()
3253 if (STp->immediate) { in set_location()
3255 timeout = STp->device->request_queue->rq_timeout; in set_location()
3261 return (STp->buffer)->syscall_result; in set_location()
3263 STps->drv_block = STps->drv_file = (-1); in set_location()
3264 STps->eof = ST_NOEOF; in set_location()
3265 if ((STp->buffer)->syscall_result != 0) { in set_location()
3266 result = (-EIO); in set_location()
3267 if (STp->can_partitions && in set_location()
3268 (STp->device)->scsi_level >= SCSI_2 && in set_location()
3270 STp->partition = p; in set_location()
3272 if (STp->can_partitions) { in set_location()
3273 STp->partition = partition; in set_location()
3274 STps = &(STp->ps[partition]); in set_location()
3275 if (!STps->last_block_valid || in set_location()
3276 STps->last_block_visited != block) { in set_location()
3277 STps->at_sm = 0; in set_location()
3278 STps->rw = ST_IDLE; in set_location()
3281 STps->at_sm = 0; in set_location()
3283 STps->drv_block = STps->drv_file = 0; in set_location()
3304 return (-EIO); in find_partition()
3314 if (STp->partition == STp->new_partition) in switch_partition()
3316 STps = &(STp->ps[STp->new_partition]); in switch_partition()
3317 if (!STps->last_block_valid) in switch_partition()
3318 STps->last_block_visited = 0; in switch_partition()
3319 return set_location(STp, STps->last_block_visited, STp->new_partition, 1); in switch_partition()
3339 /* Get the number of partitions on the tape. As a side effect reads the
3345 if (STp->ready != ST_READY) in nbr_partitions()
3346 return (-EIO); in nbr_partitions()
3352 result = (-EIO); in nbr_partitions()
3354 result = (STp->buffer)->b_data[MODE_HEADER_LENGTH + in nbr_partitions()
3356 DEBC_printk(STp, "Number of partitions %d.\n", result); in nbr_partitions()
3366 int timeout = STp->long_timeout; in format_medium()
3373 if (STp->immediate) { in format_medium()
3375 timeout = STp->device->request_queue->rq_timeout; in format_medium()
3381 result = STp->buffer->syscall_result; in format_medium()
3386 /* Partition the tape into two partitions if size > 0 or one partition if
3389 The block descriptors are read and written because Sony SDT-7000 does not
3394 Michael Schaefer's Sony SDT-7000 returns two descriptors and the second is
3395 used to set the size of partition 1 (this is what the SCSI-3 standard specifies).
3397 partition size fields is greater than the maximum number of additional partitions
3400 For Seagate DDS drives the page length must be 8 when no partitions is defined
3405 For drives that advertize SCSI-3 or newer, use the SSC-3 methods.
3411 bool scsi3 = STp->device->scsi_level >= SCSI_3, needs_format = false; in partition_tape()
3424 size = -size; in partition_tape()
3428 bp = (STp->buffer)->b_data; in partition_tape()
3433 psd_cnt = (bp[pgo + MP_OFF_PAGE_LENGTH] + 2 - PART_PAGE_FIXED_LENGTH) / 2; in partition_tape()
3448 /* Use units scaling for large partitions if the device in partition_tape()
3468 result = -EINVAL; in partition_tape()
3502 "Formatting tape with two partitions (%i = %d MB).\n", in partition_tape()
3523 result = (-EIO); in partition_tape()
3540 struct scsi_tape *STp = file->private_data; in st_ioctl()
3544 if (mutex_lock_interruptible(&STp->lock)) in st_ioctl()
3545 return -ERESTARTSYS; in st_ioctl()
3548 if (debugging && !STp->in_use) { in st_ioctl()
3550 retval = (-EIO); in st_ioctl()
3554 STm = &(STp->modes[STp->current_mode]); in st_ioctl()
3555 STps = &(STp->ps[STp->partition]); in st_ioctl()
3563 retval = scsi_ioctl_block_when_processing_errors(STp->device, cmd_in, in st_ioctl()
3564 file->f_flags & O_NDELAY); in st_ioctl()
3575 retval = (-EINVAL); in st_ioctl()
3581 retval = (-EFAULT); in st_ioctl()
3588 retval = (-EPERM); in st_ioctl()
3591 if (!STm->defined && in st_ioctl()
3594 retval = (-ENXIO); in st_ioctl()
3598 if (!STp->pos_unknown) { in st_ioctl()
3600 if (STps->eof == ST_FM_HIT) { in st_ioctl()
3603 mtc.mt_count -= 1; in st_ioctl()
3604 if (STps->drv_file >= 0) in st_ioctl()
3605 STps->drv_file += 1; in st_ioctl()
3608 if (STps->drv_file >= 0) in st_ioctl()
3609 STps->drv_file += 1; in st_ioctl()
3616 i = !STp->can_partitions || in st_ioctl()
3617 (STp->new_partition != STp->partition); in st_ioctl()
3631 if (STps->rw == ST_WRITING && in st_ioctl()
3642 STps->rw = ST_IDLE; in st_ioctl()
3658 retval = (-EIO); in st_ioctl()
3666 if (STp->can_partitions) { in st_ioctl()
3667 /* STp->new_partition contains the in st_ioctl()
3670 STp->partition = 0; in st_ioctl()
3673 if (STp->density_changed) in st_ioctl()
3674 st_int_ioctl(STp, MTSETDENSITY, STp->changed_density); in st_ioctl()
3675 if (STp->blksize_changed) in st_ioctl()
3676 st_int_ioctl(STp, MTSETBLK, STp->changed_blksize); in st_ioctl()
3683 STps->rw = ST_IDLE; /* Prevent automatic WEOF and fsf */ in st_ioctl()
3685 if (mtc.mt_op == MTOFFL && STp->door_locked != ST_UNLOCKED) in st_ioctl()
3695 if (!STp->can_partitions || in st_ioctl()
3697 retval = (-EINVAL); in st_ioctl()
3700 if (mtc.mt_count >= STp->nbr_partitions && in st_ioctl()
3701 (STp->nbr_partitions = nbr_partitions(STp)) < 0) { in st_ioctl()
3702 retval = (-EIO); in st_ioctl()
3705 if (mtc.mt_count >= STp->nbr_partitions) { in st_ioctl()
3706 retval = (-EINVAL); in st_ioctl()
3709 STp->new_partition = mtc.mt_count; in st_ioctl()
3715 if (!STp->can_partitions) { in st_ioctl()
3716 retval = (-EINVAL); in st_ioctl()
3730 STp->ps[i].rw = ST_IDLE; in st_ioctl()
3731 STp->ps[i].at_sm = 0; in st_ioctl()
3732 STp->ps[i].last_block_valid = 0; in st_ioctl()
3734 STp->partition = STp->new_partition = 0; in st_ioctl()
3735 STp->nbr_partitions = mtc.mt_count != 0 ? 2 : 1; in st_ioctl()
3736 STps->drv_block = STps->drv_file = 0; in st_ioctl()
3742 i = set_location(STp, mtc.mt_count, STp->new_partition, 0); in st_ioctl()
3743 if (!STp->can_partitions) in st_ioctl()
3744 STp->ps[0].rw = ST_IDLE; in st_ioctl()
3764 if (STp->can_partitions && STp->ready == ST_READY && in st_ioctl()
3776 if (!STm->defined) { in st_ioctl()
3777 retval = (-ENXIO); in st_ioctl()
3784 if (cmd_mtiocget && STp->pos_unknown) { in st_ioctl()
3785 /* flush fails -> modify status accordingly */ in st_ioctl()
3787 STp->pos_unknown = 1; in st_ioctl()
3793 if (STp->can_partitions) { in st_ioctl()
3806 retval = (-EINVAL); in st_ioctl()
3810 mt_status.mt_type = STp->tape_type; in st_ioctl()
3812 ((STp->block_size << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK) | in st_ioctl()
3813 ((STp->density << MT_ST_DENSITY_SHIFT) & MT_ST_DENSITY_MASK); in st_ioctl()
3814 mt_status.mt_blkno = STps->drv_block; in st_ioctl()
3815 mt_status.mt_fileno = STps->drv_file; in st_ioctl()
3816 if (STp->block_size != 0 && mt_status.mt_blkno >= 0) { in st_ioctl()
3817 if (STps->rw == ST_WRITING) in st_ioctl()
3819 (STp->buffer)->buffer_bytes / STp->block_size; in st_ioctl()
3820 else if (STps->rw == ST_READING) in st_ioctl()
3821 mt_status.mt_blkno -= in st_ioctl()
3822 ((STp->buffer)->buffer_bytes + in st_ioctl()
3823 STp->block_size - 1) / STp->block_size; in st_ioctl()
3827 if (STp->drv_write_prot) in st_ioctl()
3835 mt_status.mt_erreg = (STp->recover_reg << MT_ST_SOFTERR_SHIFT); in st_ioctl()
3836 mt_status.mt_resid = STp->partition; in st_ioctl()
3837 if (STps->eof == ST_EOM_OK || STps->eof == ST_EOM_ERROR) in st_ioctl()
3839 else if (STps->eof >= ST_EOM_OK) in st_ioctl()
3841 if (STp->density == 1) in st_ioctl()
3843 else if (STp->density == 2) in st_ioctl()
3845 else if (STp->density == 3) in st_ioctl()
3847 if (STp->ready == ST_READY) in st_ioctl()
3849 if (STp->ready == ST_NO_TAPE) in st_ioctl()
3851 if (STps->at_sm) in st_ioctl()
3853 if (STm->do_async_writes || in st_ioctl()
3854 (STm->do_buffer_writes && STp->block_size != 0) || in st_ioctl()
3855 STp->drv_buffer != 0) in st_ioctl()
3857 if (STp->cleaning_req) in st_ioctl()
3864 STp->recover_reg = 0; /* Clear after read */ in st_ioctl()
3870 retval = (-EINVAL); in st_ioctl()
3881 mutex_unlock(&STp->lock); in st_ioctl()
3888 return -EPERM; in st_ioctl()
3894 retval = scsi_ioctl(STp->device, file->f_mode & FMODE_WRITE, cmd_in, p); in st_ioctl()
3897 STp->rew_at_close = 0; in st_ioctl()
3898 STp->ready = ST_NO_TAPE; in st_ioctl()
3903 mutex_unlock(&STp->lock); in st_ioctl()
3937 tb->frp_segs = 0; in new_tape_buffer()
3938 tb->use_sg = max_sg; in new_tape_buffer()
3939 tb->buffer_size = 0; in new_tape_buffer()
3941 tb->reserved_pages = kcalloc(max_sg, sizeof(struct page *), in new_tape_buffer()
3943 if (!tb->reserved_pages) { in new_tape_buffer()
3960 if (new_size <= STbuffer->buffer_size) in enlarge_buffer()
3963 if (STbuffer->buffer_size <= PAGE_SIZE) in enlarge_buffer()
3966 max_segs = STbuffer->use_sg; in enlarge_buffer()
3970 if (STbuffer->cleared) in enlarge_buffer()
3973 if (STbuffer->frp_segs) { in enlarge_buffer()
3974 order = STbuffer->reserved_page_order; in enlarge_buffer()
3982 STbuffer->reserved_page_order = order; in enlarge_buffer()
3991 for (segs = STbuffer->frp_segs, got = STbuffer->buffer_size; in enlarge_buffer()
3997 DEB(STbuffer->buffer_size = got); in enlarge_buffer()
4002 STbuffer->frp_segs += 1; in enlarge_buffer()
4004 STbuffer->buffer_size = got; in enlarge_buffer()
4005 STbuffer->reserved_pages[segs] = page; in enlarge_buffer()
4008 STbuffer->b_data = page_address(STbuffer->reserved_pages[0]); in enlarge_buffer()
4019 for (i=0; i < st_bp->frp_segs; i++) in clear_buffer()
4020 memset(page_address(st_bp->reserved_pages[i]), 0, in clear_buffer()
4021 PAGE_SIZE << st_bp->reserved_page_order); in clear_buffer()
4022 st_bp->cleared = 1; in clear_buffer()
4029 int i, order = STbuffer->reserved_page_order; in normalize_buffer()
4031 for (i = 0; i < STbuffer->frp_segs; i++) { in normalize_buffer()
4032 __free_pages(STbuffer->reserved_pages[i], order); in normalize_buffer()
4033 STbuffer->buffer_size -= (PAGE_SIZE << order); in normalize_buffer()
4035 STbuffer->frp_segs = 0; in normalize_buffer()
4036 STbuffer->sg_segs = 0; in normalize_buffer()
4037 STbuffer->reserved_page_order = 0; in normalize_buffer()
4038 STbuffer->map_data.offset = 0; in normalize_buffer()
4047 int length = PAGE_SIZE << st_bp->reserved_page_order; in append_to_buffer()
4049 for (i = 0, offset = st_bp->buffer_bytes; in append_to_buffer()
4050 i < st_bp->frp_segs && offset >= length; i++) in append_to_buffer()
4051 offset -= length; in append_to_buffer()
4052 if (i == st_bp->frp_segs) { /* Should never happen */ in append_to_buffer()
4054 return (-EIO); in append_to_buffer()
4056 for (; i < st_bp->frp_segs && do_count > 0; i++) { in append_to_buffer()
4057 struct page *page = st_bp->reserved_pages[i]; in append_to_buffer()
4058 cnt = length - offset < do_count ? length - offset : do_count; in append_to_buffer()
4061 return (-EFAULT); in append_to_buffer()
4062 do_count -= cnt; in append_to_buffer()
4063 st_bp->buffer_bytes += cnt; in append_to_buffer()
4068 return (-EIO); in append_to_buffer()
4079 int length = PAGE_SIZE << st_bp->reserved_page_order; in from_buffer()
4081 for (i = 0, offset = st_bp->read_pointer; in from_buffer()
4082 i < st_bp->frp_segs && offset >= length; i++) in from_buffer()
4083 offset -= length; in from_buffer()
4084 if (i == st_bp->frp_segs) { /* Should never happen */ in from_buffer()
4086 return (-EIO); in from_buffer()
4088 for (; i < st_bp->frp_segs && do_count > 0; i++) { in from_buffer()
4089 struct page *page = st_bp->reserved_pages[i]; in from_buffer()
4090 cnt = length - offset < do_count ? length - offset : do_count; in from_buffer()
4093 return (-EFAULT); in from_buffer()
4094 do_count -= cnt; in from_buffer()
4095 st_bp->buffer_bytes -= cnt; in from_buffer()
4096 st_bp->read_pointer += cnt; in from_buffer()
4101 return (-EIO); in from_buffer()
4112 int length = PAGE_SIZE << st_bp->reserved_page_order; in move_buffer_data()
4117 total=st_bp->buffer_bytes - offset; in move_buffer_data()
4118 for (src_seg=0; src_seg < st_bp->frp_segs; src_seg++) { in move_buffer_data()
4122 offset -= length; in move_buffer_data()
4125 st_bp->buffer_bytes = st_bp->read_pointer = total; in move_buffer_data()
4127 struct page *dpage = st_bp->reserved_pages[dst_seg]; in move_buffer_data()
4128 struct page *spage = st_bp->reserved_pages[src_seg]; in move_buffer_data()
4130 count = min(length - dst_offset, length - src_offset); in move_buffer_data()
4143 total -= count; in move_buffer_data()
4224 struct st_modedef *STm = &(tape->modes[mode]); in create_one_cdev()
4226 int dev_num = tape->index; in create_one_cdev()
4233 error = -ENOMEM; in create_one_cdev()
4236 cdev->owner = THIS_MODULE; in create_one_cdev()
4237 cdev->ops = &st_fops; in create_one_cdev()
4238 STm->cdevs[rew] = cdev; in create_one_cdev()
4242 pr_err("st%d: Can't add %s-rewind mode %d\n", dev_num, in create_one_cdev()
4248 i = mode << (4 - ST_NBR_MODE_BITS); in create_one_cdev()
4250 tape->name, st_formats[i]); in create_one_cdev()
4252 dev = device_create(&st_sysfs_class, &tape->device->sdev_gendev, in create_one_cdev()
4253 cdev_devno, &tape->modes[mode], "%s", name); in create_one_cdev()
4260 STm->devs[rew] = dev; in create_one_cdev()
4264 cdev_del(STm->cdevs[rew]); in create_one_cdev()
4266 STm->cdevs[rew] = NULL; in create_one_cdev()
4267 STm->devs[rew] = NULL; in create_one_cdev()
4283 return sysfs_create_link(&tape->device->sdev_gendev.kobj, in create_cdevs()
4284 &tape->modes[0].devs[0]->kobj, "tape"); in create_cdevs()
4290 sysfs_remove_link(&tape->device->sdev_gendev.kobj, "tape"); in remove_cdevs()
4292 struct st_modedef *STm = &(tape->modes[mode]); in remove_cdevs()
4294 if (STm->cdevs[rew]) in remove_cdevs()
4295 cdev_del(STm->cdevs[rew]); in remove_cdevs()
4296 if (STm->devs[rew]) in remove_cdevs()
4297 device_unregister(STm->devs[rew]); in remove_cdevs()
4311 if (SDp->type != TYPE_TAPE) in st_probe()
4312 return -ENODEV; in st_probe()
4317 "please mail to linux-scsi@vger.kernel.org.\n"); in st_probe()
4318 return -ENODEV; in st_probe()
4322 i = queue_max_segments(SDp->request_queue); in st_probe()
4339 kref_init(&tpnt->kref); in st_probe()
4341 tpnt->device = SDp; in st_probe()
4342 if (SDp->scsi_level <= 2) in st_probe()
4343 tpnt->tape_type = MT_ISSCSI1; in st_probe()
4345 tpnt->tape_type = MT_ISSCSI2; in st_probe()
4347 tpnt->buffer = buffer; in st_probe()
4348 tpnt->buffer->last_SRpnt = NULL; in st_probe()
4350 tpnt->inited = 0; in st_probe()
4351 tpnt->dirty = 0; in st_probe()
4352 tpnt->in_use = 0; in st_probe()
4353 tpnt->drv_buffer = 1; /* Try buffering if no mode sense */ in st_probe()
4354 tpnt->use_pf = (SDp->scsi_level >= SCSI_2); in st_probe()
4355 tpnt->density = 0; in st_probe()
4356 tpnt->do_auto_lock = ST_AUTO_LOCK; in st_probe()
4357 tpnt->can_bsr = (SDp->scsi_level > 2 ? 1 : ST_IN_FILE_POS); /* BSR mandatory in SCSI3 */ in st_probe()
4358 tpnt->can_partitions = 0; in st_probe()
4359 tpnt->two_fm = ST_TWO_FM; in st_probe()
4360 tpnt->fast_mteom = ST_FAST_MTEOM; in st_probe()
4361 tpnt->scsi2_logical = ST_SCSI2LOGICAL; in st_probe()
4362 tpnt->sili = ST_SILI; in st_probe()
4363 tpnt->immediate = ST_NOWAIT; in st_probe()
4364 tpnt->immediate_filemark = 0; in st_probe()
4365 tpnt->default_drvbuffer = 0xff; /* No forced buffering */ in st_probe()
4366 tpnt->partition = 0; in st_probe()
4367 tpnt->new_partition = 0; in st_probe()
4368 tpnt->nbr_partitions = 0; in st_probe()
4369 blk_queue_rq_timeout(tpnt->device->request_queue, ST_TIMEOUT); in st_probe()
4370 tpnt->long_timeout = ST_LONG_TIMEOUT; in st_probe()
4371 tpnt->try_dio = try_direct_io; in st_probe()
4372 tpnt->first_tur = 1; in st_probe()
4375 STm = &(tpnt->modes[i]); in st_probe()
4376 STm->defined = 0; in st_probe()
4377 STm->sysv = ST_SYSV; in st_probe()
4378 STm->defaults_for_writes = 0; in st_probe()
4379 STm->do_async_writes = ST_ASYNC_WRITES; in st_probe()
4380 STm->do_buffer_writes = ST_BUFFER_WRITES; in st_probe()
4381 STm->do_read_ahead = ST_READ_AHEAD; in st_probe()
4382 STm->default_compression = ST_DONT_TOUCH; in st_probe()
4383 STm->default_blksize = (-1); /* No forced size */ in st_probe()
4384 STm->default_density = (-1); /* No forced density */ in st_probe()
4385 STm->tape = tpnt; in st_probe()
4389 STps = &(tpnt->ps[i]); in st_probe()
4390 STps->rw = ST_IDLE; in st_probe()
4391 STps->eof = ST_NOEOF; in st_probe()
4392 STps->at_sm = 0; in st_probe()
4393 STps->last_block_valid = 0; in st_probe()
4394 STps->drv_block = (-1); in st_probe()
4395 STps->drv_file = (-1); in st_probe()
4398 tpnt->current_mode = 0; in st_probe()
4399 tpnt->modes[0].defined = 1; in st_probe()
4401 tpnt->density_changed = tpnt->compression_changed = in st_probe()
4402 tpnt->blksize_changed = 0; in st_probe()
4403 mutex_init(&tpnt->lock); in st_probe()
4414 tpnt->index = error; in st_probe()
4415 sprintf(tpnt->name, "st%d", tpnt->index); in st_probe()
4416 tpnt->stats = kzalloc(sizeof(struct scsi_tape_stats), GFP_KERNEL); in st_probe()
4417 if (tpnt->stats == NULL) { in st_probe()
4423 tpnt->new_media_ctr = scsi_get_ua_new_media_ctr(SDp); in st_probe()
4424 tpnt->por_ctr = scsi_get_ua_por_ctr(SDp); in st_probe()
4435 "Attached scsi tape %s\n", tpnt->name); in st_probe()
4437 tpnt->name, tpnt->try_dio ? "yes" : "no", in st_probe()
4438 queue_dma_alignment(SDp->request_queue) + 1); in st_probe()
4444 kfree(tpnt->stats); in st_probe()
4447 idr_remove(&st_index_idr, tpnt->index); in st_probe()
4455 return -ENODEV; in st_probe()
4462 int index = tpnt->index; in st_remove()
4468 kref_put(&tpnt->kref, scsi_tape_release); in st_remove()
4477 * scsi_tape_release - Called to free the Scsi_Tape structure
4489 tpnt->device = NULL; in scsi_tape_release()
4491 if (tpnt->buffer) { in scsi_tape_release()
4492 normalize_buffer(tpnt->buffer); in scsi_tape_release()
4493 kfree(tpnt->buffer->reserved_pages); in scsi_tape_release()
4494 kfree(tpnt->buffer); in scsi_tape_release()
4497 kfree(tpnt->stats); in scsi_tape_release()
4564 /* The sysfs driver interface. Read-only at the moment */
4595 * other values have -EINVAL returned if they are passed in. in debug_flag_store()
4606 return -EINVAL; in debug_flag_store()
4635 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->defined); in defined_show()
4647 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_blksize); in default_blksize_show()
4660 fmt = STm->default_density >= 0 ? "0x%02x\n" : "%d\n"; in default_density_show()
4661 l = snprintf(buf, PAGE_SIZE, fmt, STm->default_density); in default_density_show()
4673 l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_compression - 1); in default_compression_show()
4682 struct scsi_tape *STp = STm->tape; in options_show()
4686 options = STm->do_buffer_writes ? MT_ST_BUFFER_WRITES : 0; in options_show()
4687 options |= STm->do_async_writes ? MT_ST_ASYNC_WRITES : 0; in options_show()
4688 options |= STm->do_read_ahead ? MT_ST_READ_AHEAD : 0; in options_show()
4690 options |= STp->two_fm ? MT_ST_TWO_FM : 0; in options_show()
4691 options |= STp->fast_mteom ? MT_ST_FAST_MTEOM : 0; in options_show()
4692 options |= STm->defaults_for_writes ? MT_ST_DEF_WRITES : 0; in options_show()
4693 options |= STp->can_bsr ? MT_ST_CAN_BSR : 0; in options_show()
4694 options |= STp->omit_blklims ? MT_ST_NO_BLKLIMS : 0; in options_show()
4695 options |= STp->can_partitions ? MT_ST_CAN_PARTITIONS : 0; in options_show()
4696 options |= STp->scsi2_logical ? MT_ST_SCSI2LOGICAL : 0; in options_show()
4697 options |= STm->sysv ? MT_ST_SYSV : 0; in options_show()
4698 options |= STp->immediate ? MT_ST_NOWAIT : 0; in options_show()
4699 options |= STp->immediate_filemark ? MT_ST_NOWAIT_EOF : 0; in options_show()
4700 options |= STp->sili ? MT_ST_SILI : 0; in options_show()
4708 * position_lost_in_reset_show - Value 1 indicates that reads, writes, etc.
4719 struct scsi_tape *STp = STm->tape; in position_lost_in_reset_show()
4721 return sprintf(buf, "%d", STp->pos_unknown); in position_lost_in_reset_show()
4728 * read_cnt_show - return read count - count of reads made from tape drive
4739 (long long)atomic64_read(&STm->tape->stats->read_cnt)); in read_cnt_show()
4744 * read_byte_cnt_show - return read byte count - tape drives
4757 (long long)atomic64_read(&STm->tape->stats->read_byte_cnt)); in read_byte_cnt_show()
4762 * read_ns_show - return read ns - overall time spent waiting on reads in ns.
4773 (long long)atomic64_read(&STm->tape->stats->tot_read_time)); in read_ns_show()
4778 * write_cnt_show - write count - number of user calls
4790 (long long)atomic64_read(&STm->tape->stats->write_cnt)); in write_cnt_show()
4795 * write_byte_cnt_show - write byte count - raw count of
4807 (long long)atomic64_read(&STm->tape->stats->write_byte_cnt)); in write_byte_cnt_show()
4812 * write_ns_show - write ns - number of nanoseconds waiting on write
4824 (long long)atomic64_read(&STm->tape->stats->tot_write_time)); in write_ns_show()
4829 * in_flight_show - number of I/Os currently in flight -
4842 (long long)atomic64_read(&STm->tape->stats->in_flight)); in in_flight_show()
4847 * io_ns_show - io wait ns - this is the number of ns spent
4862 (long long)atomic64_read(&STm->tape->stats->tot_io_time)); in io_ns_show()
4867 * other_cnt_show - other io count - this is the number of
4881 (long long)atomic64_read(&STm->tape->stats->other_cnt)); in other_cnt_show()
4886 * resid_cnt_show - A count of the number of times we get a residual
4887 * count - this should indicate someone issuing reads larger than the
4899 (long long)atomic64_read(&STm->tape->stats->resid_cnt)); in resid_cnt_show()
4947 unsigned long end = (uaddr + count + PAGE_SIZE - 1) >> PAGE_SHIFT; in sgl_map_user_pages()
4949 const int nr_pages = end - start; in sgl_map_user_pages()
4952 struct rq_map_data *mdata = &STbp->map_data; in sgl_map_user_pages()
4956 return -EINVAL; in sgl_map_user_pages()
4960 return -ENOMEM; in sgl_map_user_pages()
4968 return -ENOMEM; in sgl_map_user_pages()
4986 mdata->offset = uaddr & ~PAGE_MASK; in sgl_map_user_pages()
4987 STbp->mapped_pages = pages; in sgl_map_user_pages()
5005 unpin_user_pages_dirty_lock(STbp->mapped_pages, nr_pages, dirtied); in sgl_unmap_user_pages()
5007 kfree(STbp->mapped_pages); in sgl_unmap_user_pages()
5008 STbp->mapped_pages = NULL; in sgl_unmap_user_pages()