Lines Matching refs:STp
242 struct scsi_tape *STp = NULL; in scsi_tape_get() local
247 STp = idr_find(&st_index_idr, dev); in scsi_tape_get()
248 if (!STp) goto out; in scsi_tape_get()
250 kref_get(&STp->kref); in scsi_tape_get()
252 if (!STp->device) in scsi_tape_get()
255 if (scsi_device_get(STp->device)) in scsi_tape_get()
261 kref_put(&STp->kref, scsi_tape_release); in scsi_tape_get()
262 STp = NULL; in scsi_tape_get()
266 return STp; in scsi_tape_get()
269 static void scsi_tape_put(struct scsi_tape *STp) in scsi_tape_put() argument
271 struct scsi_device *sdev = STp->device; in scsi_tape_put()
274 kref_put(&STp->kref, scsi_tape_release); in scsi_tape_put()
357 static int st_chk_result(struct scsi_tape *STp, struct st_request * SRpnt) in st_chk_result() argument
362 char *name = tape_name(STp); in st_chk_result()
368 cmdstatp = &STp->buffer->cmdstat; in st_chk_result()
372 scode = STp->buffer->cmdstat.sense_hdr.sense_key; in st_chk_result()
378 st_printk(ST_DEB_MSG, STp, in st_chk_result()
383 __scsi_print_sense(STp->device, name, in st_chk_result()
388 st_printk(KERN_WARNING, STp, in st_chk_result()
400 __scsi_print_sense(STp->device, name, 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()
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()
427 STp->recover_count++; in st_chk_result()
428 STp->recover_reg++; in st_chk_result()
438 st_printk(ST_DEB_MSG, STp, in st_chk_result()
440 stp, STp->recover_count); in st_chk_result()
473 static void st_do_stats(struct scsi_tape *STp, struct request *req) in st_do_stats() argument
479 now = ktime_sub(now, STp->stats->write_time); in st_do_stats()
480 atomic64_add(ktime_to_ns(now), &STp->stats->tot_write_time); in st_do_stats()
481 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
482 atomic64_inc(&STp->stats->write_cnt); in st_do_stats()
484 atomic64_add(atomic_read(&STp->stats->last_write_size) in st_do_stats()
485 - STp->buffer->cmdstat.residual, in st_do_stats()
486 &STp->stats->write_byte_cnt); in st_do_stats()
487 if (STp->buffer->cmdstat.residual > 0) in st_do_stats()
488 atomic64_inc(&STp->stats->resid_cnt); in st_do_stats()
490 atomic64_add(atomic_read(&STp->stats->last_write_size), in st_do_stats()
491 &STp->stats->write_byte_cnt); in st_do_stats()
493 now = ktime_sub(now, STp->stats->read_time); in st_do_stats()
494 atomic64_add(ktime_to_ns(now), &STp->stats->tot_read_time); in st_do_stats()
495 atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time); in st_do_stats()
496 atomic64_inc(&STp->stats->read_cnt); in st_do_stats()
498 atomic64_add(atomic_read(&STp->stats->last_read_size) in st_do_stats()
499 - STp->buffer->cmdstat.residual, in st_do_stats()
500 &STp->stats->read_byte_cnt); in st_do_stats()
501 if (STp->buffer->cmdstat.residual > 0) in st_do_stats()
502 atomic64_inc(&STp->stats->resid_cnt); in st_do_stats()
504 atomic64_add(atomic_read(&STp->stats->last_read_size), in st_do_stats()
505 &STp->stats->read_byte_cnt); in st_do_stats()
507 now = ktime_sub(now, STp->stats->other_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->other_cnt); in st_do_stats()
511 atomic64_dec(&STp->stats->in_flight); in st_do_stats()
518 struct scsi_tape *STp = SRpnt->stp; in st_scsi_execute_end() local
521 STp->buffer->cmdstat.midlevel_result = SRpnt->result = rq->result; in st_scsi_execute_end()
522 STp->buffer->cmdstat.residual = rq->resid_len; in st_scsi_execute_end()
524 st_do_stats(STp, req); in st_scsi_execute_end()
544 struct scsi_tape *STp = SRpnt->stp; in st_scsi_execute() local
565 atomic64_inc(&STp->stats->in_flight); in st_scsi_execute()
567 atomic_set(&STp->stats->last_write_size, bufflen); in st_scsi_execute()
568 STp->stats->write_time = ktime_get(); in st_scsi_execute()
570 atomic_set(&STp->stats->last_read_size, bufflen); in st_scsi_execute()
571 STp->stats->read_time = ktime_get(); in st_scsi_execute()
573 STp->stats->other_time = ktime_get(); in st_scsi_execute()
592 st_do_scsi(struct st_request * SRpnt, struct scsi_tape * STp, unsigned char *cmd, in st_do_scsi() argument
596 struct rq_map_data *mdata = &STp->buffer->map_data; in st_do_scsi()
600 if (!do_wait && ((STp->buffer)->last_SRpnt)) { in st_do_scsi()
601 st_printk(KERN_ERR, STp, in st_do_scsi()
604 (STp->buffer)->syscall_result = (-EINTR); in st_do_scsi()
606 (STp->buffer)->syscall_result = (-EBUSY); in st_do_scsi()
611 SRpnt = st_allocate_request(STp); in st_do_scsi()
619 (STp->buffer)->last_SRpnt = SRpnt; in st_do_scsi()
621 waiting = &STp->wait; in st_do_scsi()
625 if (STp->buffer->do_dio) { in st_do_scsi()
627 mdata->nr_entries = STp->buffer->sg_segs; in st_do_scsi()
628 mdata->pages = STp->buffer->mapped_pages; in st_do_scsi()
630 mdata->page_order = STp->buffer->reserved_page_order; in st_do_scsi()
633 mdata->pages = STp->buffer->reserved_pages; in st_do_scsi()
638 STp->buffer->cmdstat.have_sense = 0; in st_do_scsi()
639 STp->buffer->syscall_result = 0; in st_do_scsi()
645 (STp->buffer)->syscall_result = (-EBUSY); in st_do_scsi()
646 (STp->buffer)->last_SRpnt = NULL; in st_do_scsi()
650 (STp->buffer)->syscall_result = st_chk_result(STp, SRpnt); in st_do_scsi()
661 static int write_behind_check(struct scsi_tape * STp) in write_behind_check() argument
669 STbuffer = STp->buffer; in write_behind_check()
674 if (STp->write_pending) in write_behind_check()
675 STp->nbr_waits++; in write_behind_check()
677 STp->nbr_finished++; in write_behind_check()
680 wait_for_completion(&(STp->wait)); in write_behind_check()
685 (STp->buffer)->syscall_result = st_chk_result(STp, SRpnt); in write_behind_check()
689 STps = &(STp->ps[STp->partition]); in write_behind_check()
691 if (STp->block_size == 0) in write_behind_check()
694 STps->drv_block += STbuffer->writing / STp->block_size; in write_behind_check()
715 st_printk(ST_DEB_MSG, STp, in write_behind_check()
725 static int cross_eof(struct scsi_tape * STp, int forward) in cross_eof() argument
739 DEBC_printk(STp, "Stepping over filemark %s.\n", in cross_eof()
742 SRpnt = st_do_scsi(NULL, STp, cmd, 0, DMA_NONE, in cross_eof()
743 STp->device->request_queue->rq_timeout, in cross_eof()
746 return (STp->buffer)->syscall_result; in cross_eof()
751 if ((STp->buffer)->cmdstat.midlevel_result != 0) in cross_eof()
752 st_printk(KERN_ERR, STp, in cross_eof()
756 return (STp->buffer)->syscall_result; in cross_eof()
761 static int st_flush_write_buffer(struct scsi_tape * STp) in st_flush_write_buffer() argument
769 result = write_behind_check(STp); in st_flush_write_buffer()
774 if (STp->dirty == 1) { in st_flush_write_buffer()
776 transfer = STp->buffer->buffer_bytes; in st_flush_write_buffer()
777 DEBC_printk(STp, "Flushing %d bytes.\n", transfer); in st_flush_write_buffer()
782 blks = transfer / STp->block_size; in st_flush_write_buffer()
787 SRpnt = st_do_scsi(NULL, STp, cmd, transfer, DMA_TO_DEVICE, in st_flush_write_buffer()
788 STp->device->request_queue->rq_timeout, in st_flush_write_buffer()
791 return (STp->buffer)->syscall_result; in st_flush_write_buffer()
793 STps = &(STp->ps[STp->partition]); in st_flush_write_buffer()
794 if ((STp->buffer)->syscall_result != 0) { in st_flush_write_buffer()
795 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush_write_buffer()
803 STp->dirty = 0; in st_flush_write_buffer()
804 (STp->buffer)->buffer_bytes = 0; in st_flush_write_buffer()
809 st_printk(KERN_ERR, STp, "Error on flush.\n"); in st_flush_write_buffer()
816 STp->dirty = 0; in st_flush_write_buffer()
817 (STp->buffer)->buffer_bytes = 0; in st_flush_write_buffer()
828 static int flush_buffer(struct scsi_tape *STp, int seek_next) in flush_buffer() argument
837 if (STp->pos_unknown) in flush_buffer()
840 if (STp->ready != ST_READY) in flush_buffer()
842 STps = &(STp->ps[STp->partition]); in flush_buffer()
844 return st_flush_write_buffer(STp); in flush_buffer()
846 if (STp->block_size == 0) in flush_buffer()
849 backspace = ((STp->buffer)->buffer_bytes + in flush_buffer()
850 (STp->buffer)->read_pointer) / STp->block_size - in flush_buffer()
851 ((STp->buffer)->read_pointer + STp->block_size - 1) / in flush_buffer()
852 STp->block_size; in flush_buffer()
853 (STp->buffer)->buffer_bytes = 0; in flush_buffer()
854 (STp->buffer)->read_pointer = 0; in flush_buffer()
858 result = cross_eof(STp, 0); /* Back over the EOF hit */ in flush_buffer()
868 result = st_int_ioctl(STp, MTBSR, backspace); in flush_buffer()
880 static int set_mode_densblk(struct scsi_tape * STp, struct st_modedef * STm) in set_mode_densblk() argument
885 if (!STp->density_changed && in set_mode_densblk()
887 STm->default_density != STp->density) { in set_mode_densblk()
891 arg = STp->density; in set_mode_densblk()
893 if (!STp->blksize_changed && in set_mode_densblk()
895 STm->default_blksize != STp->block_size) { in set_mode_densblk()
899 arg |= STp->block_size; in set_mode_densblk()
901 st_int_ioctl(STp, SET_DENS_AND_BLK, arg)) { in set_mode_densblk()
902 st_printk(KERN_WARNING, STp, in set_mode_densblk()
914 static int do_door_lock(struct scsi_tape * STp, int do_lock) in do_door_lock() argument
918 DEBC_printk(STp, "%socking drive door.\n", do_lock ? "L" : "Unl"); in do_door_lock()
920 retval = scsi_set_medium_removal(STp->device, in do_door_lock()
923 STp->door_locked = do_lock ? ST_LOCKED_EXPLICIT : ST_UNLOCKED; in do_door_lock()
925 STp->door_locked = ST_LOCK_FAILS; in do_door_lock()
931 static void reset_state(struct scsi_tape *STp) in reset_state() argument
936 STp->pos_unknown = 0; in reset_state()
938 STps = &(STp->ps[i]); in reset_state()
946 if (STp->can_partitions) { in reset_state()
947 STp->partition = find_partition(STp); in reset_state()
948 if (STp->partition < 0) in reset_state()
949 STp->partition = 0; in reset_state()
950 STp->new_partition = STp->partition; in reset_state()
963 static int test_ready(struct scsi_tape *STp, int do_wait) in test_ready() argument
969 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in test_ready()
976 SRpnt = st_do_scsi(SRpnt, STp, cmd, 0, DMA_NONE, in test_ready()
977 STp->long_timeout, MAX_READY_RETRIES, 1); in test_ready()
980 retval = (STp->buffer)->syscall_result; in test_ready()
1010 if ((STp->device)->scsi_level >= SCSI_2 && in test_ready()
1020 retval = (STp->buffer)->syscall_result; in test_ready()
1037 static int check_tape(struct scsi_tape *STp, struct file *filp) in check_tape() argument
1048 STp->ready = ST_READY; in check_tape()
1050 if (mode != STp->current_mode) { in check_tape()
1051 DEBC_printk(STp, "Mode change from %d to %d.\n", in check_tape()
1052 STp->current_mode, mode); in check_tape()
1054 STp->current_mode = mode; in check_tape()
1056 STm = &(STp->modes[STp->current_mode]); in check_tape()
1058 saved_cleaning = STp->cleaning_req; in check_tape()
1059 STp->cleaning_req = 0; in check_tape()
1062 retval = test_ready(STp, do_wait); in check_tape()
1068 STp->pos_unknown = 0; in check_tape()
1069 STp->partition = STp->new_partition = 0; in check_tape()
1070 if (STp->can_partitions) in check_tape()
1071 STp->nbr_partitions = 1; /* This guess will be updated later in check_tape()
1074 STps = &(STp->ps[i]); in check_tape()
1085 STp->cleaning_req |= saved_cleaning; in check_tape()
1089 STp->ready = ST_NO_TAPE; in check_tape()
1091 STp->ready = ST_NOT_READY; in check_tape()
1093 STp->density = 0; /* Clear the erroneous "residue" */ in check_tape()
1094 STp->write_prot = 0; in check_tape()
1095 STp->block_size = 0; in check_tape()
1096 STp->ps[0].drv_file = STp->ps[0].drv_block = (-1); in check_tape()
1097 STp->partition = STp->new_partition = 0; in check_tape()
1098 STp->door_locked = ST_UNLOCKED; in check_tape()
1103 if (STp->omit_blklims) in check_tape()
1104 STp->min_block = STp->max_block = (-1); in check_tape()
1109 SRpnt = st_do_scsi(SRpnt, STp, cmd, 6, DMA_FROM_DEVICE, in check_tape()
1110 STp->device->request_queue->rq_timeout, in check_tape()
1113 retval = (STp->buffer)->syscall_result; in check_tape()
1117 if (!SRpnt->result && !STp->buffer->cmdstat.have_sense) { in check_tape()
1118 STp->max_block = ((STp->buffer)->b_data[1] << 16) | in check_tape()
1119 ((STp->buffer)->b_data[2] << 8) | (STp->buffer)->b_data[3]; in check_tape()
1120 STp->min_block = ((STp->buffer)->b_data[4] << 8) | in check_tape()
1121 (STp->buffer)->b_data[5]; in check_tape()
1122 if ( DEB( debugging || ) !STp->inited) in check_tape()
1123 st_printk(KERN_INFO, STp, in check_tape()
1125 STp->min_block, STp->max_block); in check_tape()
1127 STp->min_block = STp->max_block = (-1); in check_tape()
1128 DEBC_printk(STp, "Can't read block limits.\n"); in check_tape()
1136 SRpnt = st_do_scsi(SRpnt, STp, cmd, 12, DMA_FROM_DEVICE, in check_tape()
1137 STp->device->request_queue->rq_timeout, in check_tape()
1140 retval = (STp->buffer)->syscall_result; in check_tape()
1144 if ((STp->buffer)->syscall_result != 0) { in check_tape()
1145 DEBC_printk(STp, "No Mode Sense.\n"); in check_tape()
1146 STp->block_size = ST_DEFAULT_BLOCK; /* Educated guess (?) */ in check_tape()
1147 (STp->buffer)->syscall_result = 0; /* Prevent error propagation */ in check_tape()
1148 STp->drv_write_prot = 0; in check_tape()
1150 DEBC_printk(STp,"Mode sense. Length %d, " in check_tape()
1152 (STp->buffer)->b_data[0], in check_tape()
1153 (STp->buffer)->b_data[1], in check_tape()
1154 (STp->buffer)->b_data[2], in check_tape()
1155 (STp->buffer)->b_data[3]); in check_tape()
1157 if ((STp->buffer)->b_data[3] >= 8) { in check_tape()
1158 STp->drv_buffer = ((STp->buffer)->b_data[2] >> 4) & 7; in check_tape()
1159 STp->density = (STp->buffer)->b_data[4]; in check_tape()
1160 STp->block_size = (STp->buffer)->b_data[9] * 65536 + in check_tape()
1161 (STp->buffer)->b_data[10] * 256 + (STp->buffer)->b_data[11]; in check_tape()
1162 DEBC_printk(STp, "Density %x, tape length: %x, " in check_tape()
1164 STp->density, in check_tape()
1165 (STp->buffer)->b_data[5] * 65536 + in check_tape()
1166 (STp->buffer)->b_data[6] * 256 + in check_tape()
1167 (STp->buffer)->b_data[7], in check_tape()
1168 STp->drv_buffer); in check_tape()
1170 STp->drv_write_prot = ((STp->buffer)->b_data[2] & 0x80) != 0; in check_tape()
1171 if (!STp->drv_buffer && STp->immediate_filemark) { in check_tape()
1172 st_printk(KERN_WARNING, STp, in check_tape()
1175 STp->immediate_filemark = 0; in check_tape()
1180 STp->inited = 1; in check_tape()
1182 if (STp->block_size > 0) in check_tape()
1183 (STp->buffer)->buffer_blocks = in check_tape()
1184 (STp->buffer)->buffer_size / STp->block_size; in check_tape()
1186 (STp->buffer)->buffer_blocks = 1; in check_tape()
1187 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in check_tape()
1189 DEBC_printk(STp, "Block size: %d, buffer size: %d (%d blocks).\n", in check_tape()
1190 STp->block_size, (STp->buffer)->buffer_size, in check_tape()
1191 (STp->buffer)->buffer_blocks); in check_tape()
1193 if (STp->drv_write_prot) { in check_tape()
1194 STp->write_prot = 1; in check_tape()
1196 DEBC_printk(STp, "Write protected\n"); in check_tape()
1206 if (STp->can_partitions && STp->nbr_partitions < 1) { in check_tape()
1210 DEBC_printk(STp, "Updating partition number in status.\n"); in check_tape()
1211 if ((STp->partition = find_partition(STp)) < 0) { in check_tape()
1212 retval = STp->partition; in check_tape()
1215 STp->new_partition = STp->partition; in check_tape()
1216 STp->nbr_partitions = 1; /* This guess will be updated when necessary */ in check_tape()
1220 STp->density_changed = STp->blksize_changed = 0; in check_tape()
1221 STp->compression_changed = 0; in check_tape()
1223 (retval = set_mode_densblk(STp, STm)) < 0) in check_tape()
1226 if (STp->default_drvbuffer != 0xff) { in check_tape()
1227 if (st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer)) in check_tape()
1228 st_printk(KERN_WARNING, STp, in check_tape()
1231 STp->default_drvbuffer); in check_tape()
1248 struct scsi_tape *STp; in st_open() local
1259 if (!(STp = scsi_tape_get(dev))) { in st_open()
1263 filp->private_data = STp; in st_open()
1266 if (STp->in_use) { in st_open()
1268 scsi_tape_put(STp); in st_open()
1269 DEBC_printk(STp, "Device already in use.\n"); in st_open()
1273 STp->in_use = 1; in st_open()
1275 STp->rew_at_close = STp->autorew_dev = (iminor(inode) & 0x80) == 0; in st_open()
1277 if (scsi_autopm_get_device(STp->device) < 0) { in st_open()
1282 if (!scsi_block_when_processing_errors(STp->device)) { in st_open()
1288 if (!enlarge_buffer(STp->buffer, PAGE_SIZE, STp->restr_dma)) { in st_open()
1289 st_printk(KERN_WARNING, STp, in st_open()
1295 (STp->buffer)->cleared = 0; in st_open()
1296 (STp->buffer)->writing = 0; in st_open()
1297 (STp->buffer)->syscall_result = 0; in st_open()
1299 STp->write_prot = ((filp->f_flags & O_ACCMODE) == O_RDONLY); in st_open()
1301 STp->dirty = 0; in st_open()
1303 STps = &(STp->ps[i]); in st_open()
1306 STp->try_dio_now = STp->try_dio; in st_open()
1307 STp->recover_count = 0; in st_open()
1308 DEB( STp->nbr_waits = STp->nbr_finished = 0; in st_open()
1309 STp->nbr_requests = STp->nbr_dio = STp->nbr_pages = 0; ) in st_open()
1311 retval = check_tape(STp, filp); in st_open()
1316 if (STp->ready == NO_TAPE) in st_open()
1325 normalize_buffer(STp->buffer); in st_open()
1327 STp->in_use = 0; in st_open()
1330 scsi_autopm_put_device(STp->device); in st_open()
1331 scsi_tape_put(STp); in st_open()
1343 struct scsi_tape *STp = filp->private_data; in st_flush() local
1344 struct st_modedef *STm = &(STp->modes[STp->current_mode]); in st_flush()
1345 struct st_partstat *STps = &(STp->ps[STp->partition]); in st_flush()
1350 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1351 result = st_flush_write_buffer(STp); in st_flush()
1356 if (STp->can_partitions && in st_flush()
1357 (result2 = switch_partition(STp)) < 0) { in st_flush()
1358 DEBC_printk(STp, "switch_partition at close failed.\n"); in st_flush()
1364 DEBC( if (STp->nbr_requests) in st_flush()
1365 st_printk(KERN_DEBUG, STp, in st_flush()
1367 "pages %d.\n", STp->nbr_requests, STp->nbr_dio, in st_flush()
1368 STp->nbr_pages)); in st_flush()
1370 if (STps->rw == ST_WRITING && !STp->pos_unknown) { in st_flush()
1371 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_flush()
1374 DEBC_printk(STp, "Async write waits %d, finished %d.\n", in st_flush()
1375 STp->nbr_waits, STp->nbr_finished); in st_flush()
1379 if (STp->immediate_filemark) in st_flush()
1381 cmd[4] = 1 + STp->two_fm; in st_flush()
1383 SRpnt = st_do_scsi(NULL, STp, cmd, 0, DMA_NONE, in st_flush()
1384 STp->device->request_queue->rq_timeout, in st_flush()
1387 result = (STp->buffer)->syscall_result; in st_flush()
1391 if (STp->buffer->syscall_result == 0 || in st_flush()
1403 if (STp->two_fm) in st_flush()
1404 cross_eof(STp, 0); in st_flush()
1410 st_printk(KERN_ERR, STp, in st_flush()
1416 DEBC_printk(STp, "Buffer flushed, %d EOF(s) written\n", cmd[4]); in st_flush()
1417 } else if (!STp->rew_at_close) { in st_flush()
1418 STps = &(STp->ps[STp->partition]); in st_flush()
1420 if (STp->can_bsr) in st_flush()
1421 result = flush_buffer(STp, 0); in st_flush()
1423 result = cross_eof(STp, 0); in st_flush()
1433 !(result = cross_eof(STp, 1))) || in st_flush()
1443 if (STp->rew_at_close) { in st_flush()
1444 result2 = st_int_ioctl(STp, MTREW, 1); in st_flush()
1457 struct scsi_tape *STp = filp->private_data; in st_release() local
1459 if (STp->door_locked == ST_LOCKED_AUTO) in st_release()
1460 do_door_lock(STp, 0); in st_release()
1462 normalize_buffer(STp->buffer); in st_release()
1464 STp->in_use = 0; in st_release()
1466 scsi_autopm_put_device(STp->device); in st_release()
1467 scsi_tape_put(STp); in st_release()
1473 static ssize_t rw_checks(struct scsi_tape *STp, struct file *filp, size_t count) in rw_checks() argument
1483 if (!scsi_block_when_processing_errors(STp->device)) { in rw_checks()
1488 if (STp->ready != ST_READY) { in rw_checks()
1489 if (STp->ready == ST_NO_TAPE) in rw_checks()
1496 if (! STp->modes[STp->current_mode].defined) { in rw_checks()
1506 if (STp->pos_unknown) { in rw_checks()
1515 if (!STp->in_use) { in rw_checks()
1516 st_printk(ST_DEB_MSG, STp, in rw_checks()
1522 if (STp->can_partitions && in rw_checks()
1523 (retval = switch_partition(STp)) < 0) in rw_checks()
1526 if (STp->block_size == 0 && STp->max_block > 0 && in rw_checks()
1527 (count < STp->min_block || count > STp->max_block)) { in rw_checks()
1532 if (STp->do_auto_lock && STp->door_locked == ST_UNLOCKED && in rw_checks()
1533 !do_door_lock(STp, 1)) in rw_checks()
1534 STp->door_locked = ST_LOCKED_AUTO; in rw_checks()
1541 static int setup_buffering(struct scsi_tape *STp, const char __user *buf, in setup_buffering() argument
1545 struct st_buffer *STbp = STp->buffer; in setup_buffering()
1548 i = STp->try_dio_now && try_rdio; in setup_buffering()
1550 i = STp->try_dio_now && try_wdio; in setup_buffering()
1553 STp->device->request_queue)) == 0) { in setup_buffering()
1565 STp->nbr_dio++; in setup_buffering()
1566 STp->nbr_pages += STbp->do_dio; in setup_buffering()
1571 DEB( STp->nbr_requests++; ) in setup_buffering()
1574 if (STp->block_size) in setup_buffering()
1575 bufsize = STp->block_size > st_fixed_buffer_size ? in setup_buffering()
1576 STp->block_size : st_fixed_buffer_size; in setup_buffering()
1581 if (is_read && STp->sili && !STbp->cleared) in setup_buffering()
1586 !enlarge_buffer(STbp, bufsize, STp->restr_dma)) { in setup_buffering()
1587 st_printk(KERN_WARNING, STp, in setup_buffering()
1593 if (STp->block_size) in setup_buffering()
1594 STbp->buffer_blocks = bufsize / STp->block_size; in setup_buffering()
1603 static void release_buffering(struct scsi_tape *STp, int is_read) in release_buffering() argument
1607 STbp = STp->buffer; in release_buffering()
1628 struct scsi_tape *STp = filp->private_data; in st_write() local
1633 if (mutex_lock_interruptible(&STp->lock)) in st_write()
1636 retval = rw_checks(STp, filp, count); in st_write()
1641 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_write()
1642 st_printk(KERN_WARNING, STp, in st_write()
1648 STm = &(STp->modes[STp->current_mode]); in st_write()
1649 STps = &(STp->ps[STp->partition]); in st_write()
1651 if (STp->write_prot) { in st_write()
1658 retval = flush_buffer(STp, 0); in st_write()
1664 if ((retval = set_mode_densblk(STp, STm)) < 0) in st_write()
1667 !(STp->compression_changed)) { in st_write()
1668 if (st_compression(STp, (STm->default_compression == ST_YES))) { in st_write()
1669 st_printk(KERN_WARNING, STp, in st_write()
1679 STbp = STp->buffer; in st_write()
1680 i = write_behind_check(STp); in st_write()
1700 if (STp->block_size != 0 && in st_write()
1708 retval = setup_buffering(STp, buf, count, 0); in st_write()
1716 cmd[1] = (STp->block_size != 0); in st_write()
1727 if (STp->block_size == 0) in st_write()
1730 do_count = STbp->buffer_blocks * STp->block_size - in st_write()
1745 async_write = STp->block_size == 0 && !STbp->do_dio && in st_write()
1748 if (STp->block_size != 0 && STm->do_buffer_writes && in st_write()
1749 !(STp->try_dio_now && try_wdio) && STps->eof < ST_EOM_OK && in st_write()
1751 STp->dirty = 1; in st_write()
1758 if (STp->block_size == 0) in st_write()
1765 blks /= STp->block_size; in st_write()
1766 transfer = blks * STp->block_size; in st_write()
1772 SRpnt = st_do_scsi(SRpnt, STp, cmd, transfer, DMA_TO_DEVICE, in st_write()
1773 STp->device->request_queue->rq_timeout, in st_write()
1781 STp->dirty = !(STbp->writing == in st_write()
1784 DEB( STp->write_pending = 1; ) in st_write()
1789 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_write()
1791 DEBC_printk(STp, "Error on write:\n"); in st_write()
1796 else if (STp->block_size == 0 && in st_write()
1801 if (STp->block_size != 0) in st_write()
1802 undone *= STp->block_size; in st_write()
1808 if (STp->block_size) in st_write()
1809 blks = (transfer - undone) / STp->block_size; in st_write()
1815 if (STp->block_size == 0 || in st_write()
1818 DEBC_printk(STp, "EOM with %d " in st_write()
1826 move_buffer_data(STp->buffer, transfer - undone); in st_write()
1830 STp->block_size; in st_write()
1833 DEBC_printk(STp, "Retry " in st_write()
1836 STp->buffer->buffer_bytes); in st_write()
1847 DEBC_printk(STp, "EOM with " in st_write()
1860 if (STp->block_size == 0) in st_write()
1867 STp->dirty = 0; in st_write()
1885 release_buffering(STp, 0); in st_write()
1886 mutex_unlock(&STp->lock); in st_write()
1897 static long read_tape(struct scsi_tape *STp, long count, in read_tape() argument
1911 STm = &(STp->modes[STp->current_mode]); in read_tape()
1912 STps = &(STp->ps[STp->partition]); in read_tape()
1915 STbp = STp->buffer; in read_tape()
1917 if (STp->block_size == 0) in read_tape()
1920 if (!(STp->try_dio_now && try_rdio) && STm->do_read_ahead) { in read_tape()
1921 blks = (STp->buffer)->buffer_blocks; in read_tape()
1922 bytes = blks * STp->block_size; in read_tape()
1925 if (!STbp->do_dio && bytes > (STp->buffer)->buffer_size) in read_tape()
1926 bytes = (STp->buffer)->buffer_size; in read_tape()
1927 blks = bytes / STp->block_size; in read_tape()
1928 bytes = blks * STp->block_size; in read_tape()
1934 cmd[1] = (STp->block_size != 0); in read_tape()
1935 if (!cmd[1] && STp->sili) in read_tape()
1942 SRpnt = st_do_scsi(SRpnt, STp, cmd, bytes, DMA_FROM_DEVICE, in read_tape()
1943 STp->device->request_queue->rq_timeout, in read_tape()
1945 release_buffering(STp, 1); in read_tape()
1955 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in read_tape()
1958 DEBC_printk(STp, in read_tape()
1976 if (STp->block_size == 0) in read_tape()
1983 if (STp->block_size == 0 && in read_tape()
1985 st_printk(KERN_NOTICE, STp, in read_tape()
1995 } else if (STp->block_size == 0) { in read_tape()
2001 st_printk(KERN_NOTICE, STp, in read_tape()
2006 st_int_ioctl(STp, MTBSR, 1); in read_tape()
2011 STp->block_size; in read_tape()
2012 DEBC_printk(STp, "ILI but " in read_tape()
2019 if (st_int_ioctl(STp, MTBSR, 1)) in read_tape()
2027 if (STp->block_size == 0) in read_tape()
2031 bytes - transfer * STp->block_size; in read_tape()
2032 DEBC_printk(STp, "EOF detected (%d " in read_tape()
2040 if (STp->block_size == 0) in read_tape()
2044 bytes - transfer * STp->block_size; in read_tape()
2046 DEBC_printk(STp, "EOM detected (%d " in read_tape()
2053 DEBC_printk(STp, "Tape error while reading.\n"); in read_tape()
2057 DEBC_printk(STp, "Zero returned for " in read_tape()
2077 if (STp->sili) /* In fixed block mode residual is always zero here */ in read_tape()
2078 STbp->buffer_bytes -= STp->buffer->cmdstat.residual; in read_tape()
2082 if (STp->block_size == 0) in read_tape()
2085 STps->drv_block += STbp->buffer_bytes / STp->block_size; in read_tape()
2100 struct scsi_tape *STp = filp->private_data; in st_read() local
2103 struct st_buffer *STbp = STp->buffer; in st_read()
2105 if (mutex_lock_interruptible(&STp->lock)) in st_read()
2108 retval = rw_checks(STp, filp, count); in st_read()
2112 STm = &(STp->modes[STp->current_mode]); in st_read()
2113 if (STp->block_size != 0 && (count % STp->block_size) != 0) { in st_read()
2118 STp->try_dio_now = 0; /* Direct i/o can't handle split blocks */ in st_read()
2121 STps = &(STp->ps[STp->partition]); in st_read()
2123 retval = flush_buffer(STp, 0); in st_read()
2130 st_printk(ST_DEB_MSG, STp, in st_read()
2135 retval = setup_buffering(STp, buf, count, 1); in st_read()
2171 special = read_tape(STp, count - total, &SRpnt); in st_read()
2182 st_printk(ST_DEB_MSG, STp, in st_read()
2200 if (STp->block_size == 0) in st_read()
2230 release_buffering(STp, 1); in st_read()
2233 mutex_unlock(&STp->lock); in st_read()
2242 static void st_log_options(struct scsi_tape * STp, struct st_modedef * STm) in DEB() argument
2245 st_printk(KERN_INFO, STp, in DEB()
2248 STp->current_mode, STm->do_buffer_writes, in DEB()
2250 st_printk(KERN_INFO, STp, in DEB()
2253 STp->can_bsr, STp->two_fm, STp->fast_mteom, in DEB()
2254 STp->do_auto_lock); in DEB()
2255 st_printk(KERN_INFO, STp, in DEB()
2258 STm->defaults_for_writes, STp->omit_blklims, in DEB()
2259 STp->can_partitions, STp->scsi2_logical); in DEB()
2260 st_printk(KERN_INFO, STp, in DEB()
2263 STm->sysv, STp->immediate, STp->sili, in DEB()
2264 STp->immediate_filemark); in DEB()
2265 st_printk(KERN_INFO, STp, " debugging: %d\n", debugging); in DEB()
2271 static int st_set_options(struct scsi_tape *STp, long options)
2279 STm = &(STp->modes[STp->current_mode]);
2285 memcpy(STm, &(STp->modes[0]), sizeof(struct st_modedef));
2291 DEBC_printk(STp, "Initialized mode %d definition from mode 0\n",
2292 STp->current_mode);
2301 STp->two_fm = (options & MT_ST_TWO_FM) != 0;
2302 STp->fast_mteom = (options & MT_ST_FAST_MTEOM) != 0;
2303 STp->do_auto_lock = (options & MT_ST_AUTO_LOCK) != 0;
2304 STp->can_bsr = (options & MT_ST_CAN_BSR) != 0;
2305 STp->omit_blklims = (options & MT_ST_NO_BLKLIMS) != 0;
2306 if ((STp->device)->scsi_level >= SCSI_2)
2307 STp->can_partitions = (options & MT_ST_CAN_PARTITIONS) != 0;
2308 STp->scsi2_logical = (options & MT_ST_SCSI2LOGICAL) != 0;
2309 STp->immediate = (options & MT_ST_NOWAIT) != 0;
2310 STp->immediate_filemark = (options & MT_ST_NOWAIT_EOF) != 0;
2312 STp->sili = (options & MT_ST_SILI) != 0;
2314 st_log_options(STp, STm); )
2326 STp->two_fm = value;
2328 STp->fast_mteom = value;
2330 STp->do_auto_lock = value;
2332 STp->can_bsr = value;
2334 STp->omit_blklims = value;
2335 if ((STp->device)->scsi_level >= SCSI_2 &&
2337 STp->can_partitions = value;
2339 STp->scsi2_logical = value;
2341 STp->immediate = value;
2343 STp->immediate_filemark = value;
2347 STp->sili = value;
2351 st_log_options(STp, STm); )
2358 DEBC_printk(STp, "Default block size disabled.\n");
2361 DEBC_printk(STp,"Default block size set to "
2363 if (STp->ready == ST_READY) {
2364 STp->blksize_changed = 0;
2365 set_mode_densblk(STp, STm);
2371 STp->long_timeout = (value & ~MT_ST_SET_LONG_TIMEOUT) * HZ;
2372 DEBC_printk(STp, "Long timeout set to %d seconds.\n",
2375 blk_queue_rq_timeout(STp->device->request_queue,
2377 DEBC_printk(STp, "Normal timeout set to %d seconds.\n",
2386 STp->cln_mode = value;
2387 STp->cln_sense_mask = (options >> 8) & 0xff;
2388 STp->cln_sense_value = (options >> 16) & 0xff;
2389 st_printk(KERN_INFO, STp,
2391 value, STp->cln_sense_mask, STp->cln_sense_value);
2398 DEBC_printk(STp,
2402 DEBC_printk(STp, "Density default set to %x\n",
2404 if (STp->ready == ST_READY) {
2405 STp->density_changed = 0;
2406 set_mode_densblk(STp, STm);
2411 STp->default_drvbuffer = 0xff;
2412 DEBC_printk(STp,
2415 STp->default_drvbuffer = value & 7;
2416 DEBC_printk(STp,
2418 STp->default_drvbuffer);
2419 if (STp->ready == ST_READY)
2420 st_int_ioctl(STp, MTSETDRVBUFFER, STp->default_drvbuffer);
2425 DEBC_printk(STp,
2429 STp->c_algo = (value & 0xff00) >> 8;
2430 DEBC_printk(STp, "Compression "
2432 STp->c_algo);
2436 DEBC_printk(STp, "Compression default "
2439 if (STp->ready == ST_READY) {
2440 STp->compression_changed = 0;
2441 st_compression(STp, (STm->default_compression == ST_YES));
2474 static int read_mode_page(struct scsi_tape *STp, int page, int omit_block_descs) in read_mode_page() argument
2486 SRpnt = st_do_scsi(NULL, STp, cmd, cmd[4], DMA_FROM_DEVICE, in read_mode_page()
2487 STp->device->request_queue->rq_timeout, 0, 1); in read_mode_page()
2489 return (STp->buffer)->syscall_result; in read_mode_page()
2493 return STp->buffer->syscall_result; in read_mode_page()
2499 static int write_mode_page(struct scsi_tape *STp, int page, int slow) in write_mode_page() argument
2509 pgo = MODE_HEADER_LENGTH + (STp->buffer)->b_data[MH_OFF_BDESCS_LENGTH]; in write_mode_page()
2510 cmd[4] = pgo + (STp->buffer)->b_data[pgo + MP_OFF_PAGE_LENGTH] + 2; in write_mode_page()
2513 (STp->buffer)->b_data[MH_OFF_DATA_LENGTH] = 0; in write_mode_page()
2514 (STp->buffer)->b_data[MH_OFF_MEDIUM_TYPE] = 0; in write_mode_page()
2515 (STp->buffer)->b_data[MH_OFF_DEV_SPECIFIC] &= ~MH_BIT_WP; in write_mode_page()
2516 (STp->buffer)->b_data[pgo + MP_OFF_PAGE_NBR] &= MP_MSK_PAGE_NBR; in write_mode_page()
2519 STp->long_timeout : STp->device->request_queue->rq_timeout; in write_mode_page()
2520 SRpnt = st_do_scsi(NULL, STp, cmd, cmd[4], DMA_TO_DEVICE, in write_mode_page()
2523 return (STp->buffer)->syscall_result; in write_mode_page()
2527 return STp->buffer->syscall_result; in write_mode_page()
2548 static int st_compression(struct scsi_tape * STp, int state) in st_compression() argument
2552 unsigned char *b_data = (STp->buffer)->b_data; in st_compression()
2554 if (STp->ready != ST_READY) in st_compression()
2558 retval = read_mode_page(STp, COMPRESSION_PAGE, 0); in st_compression()
2560 DEBC_printk(STp, "Compression mode page not supported.\n"); in st_compression()
2565 DEBC_printk(STp, "Compression state is %d.\n", in st_compression()
2570 DEBC_printk(STp, "Compression not supported.\n"); in st_compression()
2577 if (STp->c_algo != 0) in st_compression()
2578 b_data[mpoffs + CP_OFF_C_ALGO] = STp->c_algo; in st_compression()
2582 if (STp->c_algo != 0) in st_compression()
2586 retval = write_mode_page(STp, COMPRESSION_PAGE, 0); in st_compression()
2588 DEBC_printk(STp, "Compression change failed.\n"); in st_compression()
2591 DEBC_printk(STp, "Compression state changed to %d.\n", state); in st_compression()
2593 STp->compression_changed = 1; in st_compression()
2599 static int do_load_unload(struct scsi_tape *STp, struct file *filp, int load_code) in do_load_unload() argument
2606 if (STp->ready != ST_READY && !load_code) { in do_load_unload()
2607 if (STp->ready == ST_NO_TAPE) in do_load_unload()
2622 DEBC_printk(STp, " Enhanced %sload slot %2d.\n", in do_load_unload()
2627 if (STp->immediate) { in do_load_unload()
2629 timeout = STp->device->request_queue->rq_timeout; in do_load_unload()
2632 timeout = STp->long_timeout; in do_load_unload()
2636 st_printk(ST_DEB_MSG, STp, "Unloading tape.\n"); in do_load_unload()
2638 st_printk(ST_DEB_MSG, STp, "Loading tape.\n"); in do_load_unload()
2641 SRpnt = st_do_scsi(NULL, STp, cmd, 0, DMA_NONE, in do_load_unload()
2644 return (STp->buffer)->syscall_result; in do_load_unload()
2646 retval = (STp->buffer)->syscall_result; in do_load_unload()
2652 STp->rew_at_close = 0; in do_load_unload()
2653 STp->ready = ST_NO_TAPE; in do_load_unload()
2656 STp->rew_at_close = STp->autorew_dev; in do_load_unload()
2657 retval = check_tape(STp, filp); in do_load_unload()
2663 STps = &(STp->ps[STp->partition]); in do_load_unload()
2673 static void deb_space_print(struct scsi_tape *STp, int direction, char *units, unsigned char *cmd) in deb_space_print() argument
2684 st_printk(ST_DEB_MSG, STp, "Spacing tape %s over %d %s.\n", in deb_space_print()
2690 static void deb_space_print(struct scsi_tape *STp, int direction, char *units, unsigned char *cmd) … in deb_space_print() argument
2695 static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned long arg) in st_int_ioctl() argument
2707 WARN_ON(STp->buffer->do_dio != 0); in st_int_ioctl()
2708 if (STp->ready != ST_READY) { in st_int_ioctl()
2709 if (STp->ready == ST_NO_TAPE) in st_int_ioctl()
2714 timeout = STp->long_timeout; in st_int_ioctl()
2715 STps = &(STp->ps[STp->partition]); in st_int_ioctl()
2730 deb_space_print(STp, ST_DEB_FORWARD, "filemarks", cmd); in st_int_ioctl()
2745 deb_space_print(STp, ST_DEB_BACKWARD, "filemarks", cmd); in st_int_ioctl()
2757 deb_space_print(STp, ST_DEB_FORWARD, "blocks", cmd); in st_int_ioctl()
2769 deb_space_print(STp, ST_DEB_BACKWARD, "blocks", cmd); in st_int_ioctl()
2780 deb_space_print(STp, ST_DEB_FORWARD, "setmarks", cmd); in st_int_ioctl()
2793 deb_space_print(STp, ST_DEB_BACKWARD, "setmarks", cmd); in st_int_ioctl()
2802 if (STp->write_prot) in st_int_ioctl()
2808 (cmd_in == MTWEOF && STp->immediate_filemark)) in st_int_ioctl()
2813 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2816 st_printk(ST_DEB_MSG, STp, in st_int_ioctl()
2822 st_printk(ST_DEB_MSG, STp, in st_int_ioctl()
2835 if (STp->immediate) { in st_int_ioctl()
2837 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2839 DEBC_printk(STp, "Rewinding tape.\n"); in st_int_ioctl()
2843 DEBC_printk(STp, "No op on tape.\n"); in st_int_ioctl()
2848 if (STp->immediate) { in st_int_ioctl()
2850 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2853 DEBC_printk(STp, "Retensioning tape.\n"); in st_int_ioctl()
2857 if (!STp->fast_mteom) { in st_int_ioctl()
2859 ioctl_result = st_int_ioctl(STp, MTFSF, 0x7fffff); in st_int_ioctl()
2871 DEBC_printk(STp, "Spacing to end of recorded medium.\n"); in st_int_ioctl()
2876 if (STp->write_prot) in st_int_ioctl()
2880 if (STp->immediate) { in st_int_ioctl()
2882 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2885 timeout = STp->long_timeout * 8; in st_int_ioctl()
2887 DEBC_printk(STp, "Erasing tape.\n"); in st_int_ioctl()
2895 if (STp->dirty || (STp->buffer)->buffer_bytes != 0) in st_int_ioctl()
2899 STp->max_block > 0 && in st_int_ioctl()
2900 ((arg & MT_ST_BLKSIZE_MASK) < STp->min_block || in st_int_ioctl()
2901 (arg & MT_ST_BLKSIZE_MASK) > STp->max_block)) { in st_int_ioctl()
2902 st_printk(KERN_WARNING, STp, "Illegal block size.\n"); in st_int_ioctl()
2906 if ((STp->use_pf & USE_PF)) in st_int_ioctl()
2911 memset((STp->buffer)->b_data, 0, 12); in st_int_ioctl()
2913 (STp->buffer)->b_data[2] = (arg & 7) << 4; in st_int_ioctl()
2915 (STp->buffer)->b_data[2] = in st_int_ioctl()
2916 STp->drv_buffer << 4; in st_int_ioctl()
2917 (STp->buffer)->b_data[3] = 8; /* block descriptor length */ in st_int_ioctl()
2919 (STp->buffer)->b_data[4] = arg; in st_int_ioctl()
2920 STp->density_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2922 (STp->buffer)->b_data[4] = arg >> 24; in st_int_ioctl()
2924 (STp->buffer)->b_data[4] = STp->density; in st_int_ioctl()
2928 STp->blksize_changed = 1; /* At least we tried ;-) */ in st_int_ioctl()
2930 ltmp = STp->block_size; in st_int_ioctl()
2931 (STp->buffer)->b_data[9] = (ltmp >> 16); in st_int_ioctl()
2932 (STp->buffer)->b_data[10] = (ltmp >> 8); in st_int_ioctl()
2933 (STp->buffer)->b_data[11] = ltmp; in st_int_ioctl()
2934 timeout = STp->device->request_queue->rq_timeout; in st_int_ioctl()
2937 st_printk(ST_DEB_MSG, STp, in st_int_ioctl()
2939 (STp->buffer)->b_data[9] * 65536 + in st_int_ioctl()
2940 (STp->buffer)->b_data[10] * 256 + in st_int_ioctl()
2941 (STp->buffer)->b_data[11]); in st_int_ioctl()
2943 st_printk(ST_DEB_MSG, STp, in st_int_ioctl()
2945 (STp->buffer)->b_data[4]); in st_int_ioctl()
2947 st_printk(ST_DEB_MSG, STp, in st_int_ioctl()
2949 ((STp->buffer)->b_data[2] >> 4) & 7); in st_int_ioctl()
2956 SRpnt = st_do_scsi(NULL, STp, cmd, datalen, direction, in st_int_ioctl()
2959 return (STp->buffer)->syscall_result; in st_int_ioctl()
2961 ioctl_result = (STp->buffer)->syscall_result; in st_int_ioctl()
2971 ioctl_result = st_int_ioctl(STp, MTFSF, 1); in st_int_ioctl()
2973 ioctl_result = st_int_ioctl(STp, MTBSF, 1); in st_int_ioctl()
2976 STp->block_size = arg & MT_ST_BLKSIZE_MASK; in st_int_ioctl()
2977 if (STp->block_size != 0) { in st_int_ioctl()
2978 (STp->buffer)->buffer_blocks = in st_int_ioctl()
2979 (STp->buffer)->buffer_size / STp->block_size; in st_int_ioctl()
2981 (STp->buffer)->buffer_bytes = (STp->buffer)->read_pointer = 0; in st_int_ioctl()
2983 STp->density = arg >> MT_ST_DENSITY_SHIFT; in st_int_ioctl()
2985 STp->drv_buffer = (arg & 7); in st_int_ioctl()
2987 STp->density = arg; in st_int_ioctl()
3000 struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat; in st_int_ioctl()
3075 !(STp->use_pf & PF_TESTED)) { in st_int_ioctl()
3078 STp->use_pf = (STp->use_pf ^ USE_PF) | PF_TESTED; in st_int_ioctl()
3081 return st_int_ioctl(STp, cmd_in, arg); in st_int_ioctl()
3100 static int get_location(struct scsi_tape *STp, unsigned int *block, int *partition, in get_location() argument
3107 if (STp->ready != ST_READY) in get_location()
3111 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3116 if (!logical && !STp->scsi2_logical) in get_location()
3119 SRpnt = st_do_scsi(NULL, STp, scmd, 20, DMA_FROM_DEVICE, in get_location()
3120 STp->device->request_queue->rq_timeout, in get_location()
3123 return (STp->buffer)->syscall_result; in get_location()
3125 if ((STp->buffer)->syscall_result != 0 || in get_location()
3126 (STp->device->scsi_level >= SCSI_2 && in get_location()
3127 ((STp->buffer)->b_data[0] & 4) != 0)) { in get_location()
3129 DEBC_printk(STp, " Can't read tape position.\n"); in get_location()
3133 if ((STp->device)->scsi_level < SCSI_2) { in get_location()
3134 *block = ((STp->buffer)->b_data[0] << 16) in get_location()
3135 + ((STp->buffer)->b_data[1] << 8) in get_location()
3136 + (STp->buffer)->b_data[2]; in get_location()
3139 *block = ((STp->buffer)->b_data[4] << 24) in get_location()
3140 + ((STp->buffer)->b_data[5] << 16) in get_location()
3141 + ((STp->buffer)->b_data[6] << 8) in get_location()
3142 + (STp->buffer)->b_data[7]; in get_location()
3143 *partition = (STp->buffer)->b_data[1]; in get_location()
3144 if (((STp->buffer)->b_data[0] & 0x80) && in get_location()
3145 (STp->buffer)->b_data[1] == 0) /* BOP of partition 0 */ in get_location()
3146 STp->ps[0].drv_block = STp->ps[0].drv_file = 0; in get_location()
3148 DEBC_printk(STp, "Got tape pos. blk %d part %d.\n", in get_location()
3160 static int set_location(struct scsi_tape *STp, unsigned int block, int partition, in set_location() argument
3170 if (STp->ready != ST_READY) in set_location()
3172 timeout = STp->long_timeout; in set_location()
3173 STps = &(STp->ps[STp->partition]); in set_location()
3175 DEBC_printk(STp, "Setting block to %d and partition to %d.\n", in set_location()
3181 if ((!STp->can_partitions && partition != 0) || in set_location()
3184 if (partition != STp->partition) { in set_location()
3185 if (get_location(STp, &blk, &p, 1)) in set_location()
3190 DEBC_printk(STp, "Visited block %d for " in set_location()
3192 blk, STp->partition); in set_location()
3197 if ((STp->device)->scsi_level < SCSI_2) { in set_location()
3209 if (!logical && !STp->scsi2_logical) in set_location()
3211 if (STp->partition != partition) { in set_location()
3214 DEBC_printk(STp, "Trying to change partition " in set_location()
3215 "from %d to %d\n", STp->partition, in set_location()
3219 if (STp->immediate) { in set_location()
3221 timeout = STp->device->request_queue->rq_timeout; in set_location()
3224 SRpnt = st_do_scsi(NULL, STp, scmd, 0, DMA_NONE, in set_location()
3227 return (STp->buffer)->syscall_result; in set_location()
3231 if ((STp->buffer)->syscall_result != 0) { in set_location()
3233 if (STp->can_partitions && in set_location()
3234 (STp->device)->scsi_level >= SCSI_2 && in set_location()
3235 (p = find_partition(STp)) >= 0) in set_location()
3236 STp->partition = p; in set_location()
3238 if (STp->can_partitions) { in set_location()
3239 STp->partition = partition; in set_location()
3240 STps = &(STp->ps[partition]); in set_location()
3262 static int find_partition(struct scsi_tape *STp) in find_partition() argument
3267 if ((i = get_location(STp, &block, &partition, 1)) < 0) in find_partition()
3276 static int switch_partition(struct scsi_tape *STp) in switch_partition() argument
3280 if (STp->partition == STp->new_partition) in switch_partition()
3282 STps = &(STp->ps[STp->new_partition]); in switch_partition()
3285 return set_location(STp, STps->last_block_visited, STp->new_partition, 1); in switch_partition()
3307 static int nbr_partitions(struct scsi_tape *STp) in nbr_partitions() argument
3311 if (STp->ready != ST_READY) in nbr_partitions()
3314 result = read_mode_page(STp, PART_PAGE, 1); in nbr_partitions()
3317 DEBC_printk(STp, "Can't read medium partition page.\n"); in nbr_partitions()
3320 result = (STp->buffer)->b_data[MODE_HEADER_LENGTH + in nbr_partitions()
3322 DEBC_printk(STp, "Number of partitions %d.\n", result); in nbr_partitions()
3329 static int format_medium(struct scsi_tape *STp, int format) in format_medium() argument
3332 int timeout = STp->long_timeout; in format_medium()
3339 if (STp->immediate) { in format_medium()
3341 timeout = STp->device->request_queue->rq_timeout; in format_medium()
3343 DEBC_printk(STp, "Sending FORMAT MEDIUM\n"); in format_medium()
3344 SRpnt = st_do_scsi(NULL, STp, scmd, 0, DMA_NONE, in format_medium()
3347 result = STp->buffer->syscall_result; in format_medium()
3373 static int partition_tape(struct scsi_tape *STp, int size) in partition_tape() argument
3377 bool scsi3 = STp->device->scsi_level >= SCSI_3, needs_format = false; in partition_tape()
3382 result = read_mode_page(STp, PART_PAGE, 0); in partition_tape()
3384 DEBC_printk(STp, "Can't read partition mode page.\n"); in partition_tape()
3394 bp = (STp->buffer)->b_data; in partition_tape()
3396 DEBC_printk(STp, "Partition page length is %d bytes.\n", in partition_tape()
3407 DEBC_printk(STp, "Formatting tape with one partition.\n"); in partition_tape()
3408 result = format_medium(STp, 0); in partition_tape()
3450 DEBC_printk(STp, "psd_cnt %d, max.parts %d, nbr_parts %d\n", in partition_tape()
3458 DEBC_printk(STp, "Formatting tape with one partition.\n"); in partition_tape()
3467 DEBC_printk(STp, in partition_tape()
3482 result = write_mode_page(STp, PART_PAGE, 1); in partition_tape()
3485 result = format_medium(STp, 1); in partition_tape()
3488 st_printk(KERN_INFO, STp, "Partitioning of tape failed.\n"); in partition_tape()
3504 struct scsi_tape *STp = file->private_data; in st_ioctl() local
3509 if (mutex_lock_interruptible(&STp->lock)) in st_ioctl()
3513 if (debugging && !STp->in_use) { in st_ioctl()
3514 st_printk(ST_DEB_MSG, STp, "Incorrect device.\n"); in st_ioctl()
3519 STm = &(STp->modes[STp->current_mode]); in st_ioctl()
3520 STps = &(STp->ps[STp->partition]); in st_ioctl()
3528 retval = scsi_ioctl_block_when_processing_errors(STp->device, cmd_in, in st_ioctl()
3551 st_printk(KERN_WARNING, STp, in st_ioctl()
3563 if (!STp->pos_unknown) { in st_ioctl()
3581 i = !STp->can_partitions || in st_ioctl()
3582 (STp->new_partition != STp->partition); in st_ioctl()
3591 i = flush_buffer(STp, i); in st_ioctl()
3600 i = st_int_ioctl(STp, MTWEOF, 1); in st_ioctl()
3625 reset_state(STp); in st_ioctl()
3627 STp->device->was_reset = 0; in st_ioctl()
3635 if (mtc.mt_op == MTOFFL && STp->door_locked != ST_UNLOCKED) in st_ioctl()
3636 do_door_lock(STp, 0); /* Ignore result! */ in st_ioctl()
3640 retval = st_set_options(STp, mtc.mt_count); in st_ioctl()
3645 if (!STp->can_partitions || in st_ioctl()
3650 if (mtc.mt_count >= STp->nbr_partitions && in st_ioctl()
3651 (STp->nbr_partitions = nbr_partitions(STp)) < 0) { in st_ioctl()
3655 if (mtc.mt_count >= STp->nbr_partitions) { in st_ioctl()
3659 STp->new_partition = mtc.mt_count; in st_ioctl()
3665 if (!STp->can_partitions) { in st_ioctl()
3669 i = do_load_unload(STp, file, 1); in st_ioctl()
3674 i = partition_tape(STp, mtc.mt_count); in st_ioctl()
3680 STp->ps[i].rw = ST_IDLE; in st_ioctl()
3681 STp->ps[i].at_sm = 0; in st_ioctl()
3682 STp->ps[i].last_block_valid = 0; in st_ioctl()
3684 STp->partition = STp->new_partition = 0; in st_ioctl()
3685 STp->nbr_partitions = mtc.mt_count != 0 ? 2 : 1; in st_ioctl()
3692 i = set_location(STp, mtc.mt_count, STp->new_partition, 0); in st_ioctl()
3693 if (!STp->can_partitions) in st_ioctl()
3694 STp->ps[0].rw = ST_IDLE; in st_ioctl()
3700 retval = do_load_unload(STp, file, 0); in st_ioctl()
3705 retval = do_load_unload(STp, file, max(1, mtc.mt_count)); in st_ioctl()
3710 retval = do_door_lock(STp, (mtc.mt_op == MTLOCK)); in st_ioctl()
3714 if (STp->can_partitions && STp->ready == ST_READY && in st_ioctl()
3715 (i = switch_partition(STp)) < 0) { in st_ioctl()
3721 retval = st_compression(STp, (mtc.mt_count & 1)); in st_ioctl()
3723 retval = st_int_ioctl(STp, mtc.mt_op, mtc.mt_count); in st_ioctl()
3731 if ((i = flush_buffer(STp, 0)) < 0) { in st_ioctl()
3735 if (STp->can_partitions && in st_ioctl()
3736 (i = switch_partition(STp)) < 0) { in st_ioctl()
3749 mt_status.mt_type = STp->tape_type; in st_ioctl()
3751 ((STp->block_size << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK) | in st_ioctl()
3752 ((STp->density << MT_ST_DENSITY_SHIFT) & MT_ST_DENSITY_MASK); in st_ioctl()
3755 if (STp->block_size != 0) { in st_ioctl()
3758 (STp->buffer)->buffer_bytes / STp->block_size; in st_ioctl()
3761 ((STp->buffer)->buffer_bytes + in st_ioctl()
3762 STp->block_size - 1) / STp->block_size; in st_ioctl()
3766 if (STp->drv_write_prot) in st_ioctl()
3774 mt_status.mt_erreg = (STp->recover_reg << MT_ST_SOFTERR_SHIFT); in st_ioctl()
3775 mt_status.mt_resid = STp->partition; in st_ioctl()
3780 if (STp->density == 1) in st_ioctl()
3782 else if (STp->density == 2) in st_ioctl()
3784 else if (STp->density == 3) in st_ioctl()
3786 if (STp->ready == ST_READY) in st_ioctl()
3788 if (STp->ready == ST_NO_TAPE) in st_ioctl()
3793 (STm->do_buffer_writes && STp->block_size != 0) || in st_ioctl()
3794 STp->drv_buffer != 0) in st_ioctl()
3796 if (STp->cleaning_req) in st_ioctl()
3805 STp->recover_reg = 0; /* Clear after read */ in st_ioctl()
3815 if ((i = get_location(STp, &blk, &bt, 0)) < 0) { in st_ioctl()
3825 mutex_unlock(&STp->lock); in st_ioctl()
3837 i = scsi_cmd_ioctl(STp->disk->queue, STp->disk, in st_ioctl()
3843 retval = scsi_ioctl(STp->device, cmd_in, p); in st_ioctl()
3845 STp->rew_at_close = 0; in st_ioctl()
3846 STp->ready = ST_NO_TAPE; in st_ioctl()
3851 mutex_unlock(&STp->lock); in st_ioctl()
3858 struct scsi_tape *STp = file->private_data; in st_compat_ioctl() local
3859 struct scsi_device *sdev = STp->device; in st_compat_ioctl()
4650 struct scsi_tape *STp = STm->tape; in options_show() local
4658 options |= STp->two_fm ? MT_ST_TWO_FM : 0; in options_show()
4659 options |= STp->fast_mteom ? MT_ST_FAST_MTEOM : 0; in options_show()
4661 options |= STp->can_bsr ? MT_ST_CAN_BSR : 0; in options_show()
4662 options |= STp->omit_blklims ? MT_ST_NO_BLKLIMS : 0; in options_show()
4663 options |= STp->can_partitions ? MT_ST_CAN_PARTITIONS : 0; in options_show()
4664 options |= STp->scsi2_logical ? MT_ST_SCSI2LOGICAL : 0; in options_show()
4666 options |= STp->immediate ? MT_ST_NOWAIT : 0; in options_show()
4667 options |= STp->immediate_filemark ? MT_ST_NOWAIT_EOF : 0; in options_show()
4668 options |= STp->sili ? MT_ST_SILI : 0; in options_show()