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1626 |
jcastillo |
/*
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* Copyright (C) 1993-1995 Bas Laarhoven.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* This file contains the non-read/write ftape functions
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* for the QIC-40/80 floppy-tape driver for Linux.
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*/
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#include <linux/errno.h>
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#include <linux/mm.h>
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#include <linux/ftape.h>
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#include <asm/segment.h>
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#include "tracing.h"
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#include "ftape-eof.h"
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#include "ftape-io.h"
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#include "ftape-ctl.h"
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#include "ftape-write.h"
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#include "ftape-read.h"
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#include "ftape-rw.h"
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#include "qic117.h"
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#include "ftape-bsm.h"
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/* Global vars.
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*/
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int segments_per_track = 102;
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int segments_per_head = 1020;
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int segments_per_cylinder = 4;
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int tracks_per_tape = 20;
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int ftape_failure = 1;
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int ftape_seg_pos = 0;
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int first_data_segment = -1;
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int ftape_state = idle; /* use buffer_state_enum */
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history_record history;
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int write_protected;
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int ftape_offline = 0;
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int no_tape = 1;
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int formatted = 0;
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int ftape_data_rate = 0;
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int going_offline = 0;
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int read_only = 0;
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/* Local vars.
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*/
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static int ftape_last_error = 0;
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static const vendor_struct vendors[] = QIC117_VENDORS;
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static const wakeup_method methods[] = WAKEUP_METHODS;
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static int init_drive_needed = 1;
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static int ftape_not_operational(int status)
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{
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/* return true if status indicates tape can not be used.
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*/
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return ((status ^ QIC_STATUS_CARTRIDGE_PRESENT) &
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(QIC_STATUS_ERROR |
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QIC_STATUS_CARTRIDGE_PRESENT |
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QIC_STATUS_NEW_CARTRIDGE));
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}
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int ftape_seek_to_eot(void)
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{
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TRACE_FUN(8, "ftape_seek_to_eot");
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int result;
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int status;
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result = ftape_ready_wait(timeout.pause, &status);
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while ((status & QIC_STATUS_AT_EOT) == 0) {
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if (result < 0) {
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TRACE(1, "failed");
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TRACE_EXIT;
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return result;
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}
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if (ftape_not_operational(status)) {
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TRACE_EXIT;
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return -EIO;
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}
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result = ftape_command_wait(QIC_PHYSICAL_FORWARD,
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timeout.rewind, &status);
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}
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TRACE_EXIT;
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return 0;
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}
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int ftape_seek_to_bot(void)
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{
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TRACE_FUN(8, "ftape_seek_to_bot");
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int result;
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int status;
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result = ftape_ready_wait(timeout.pause, &status);
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while ((status & QIC_STATUS_AT_BOT) == 0) {
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if (result < 0) {
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TRACE(1, "failed");
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TRACE_EXIT;
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return result;
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}
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if (ftape_not_operational(status)) {
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TRACE_EXIT;
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return -EIO;
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}
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result = ftape_command_wait(QIC_PHYSICAL_REVERSE,
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timeout.rewind, &status);
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}
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TRACE_EXIT;
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return 0;
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}
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void ftape_reset_position(void)
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{
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ftape_seg_pos = first_data_segment;
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reset_eof_list();
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}
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int ftape_new_cartridge(void)
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{
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location.track = -1; /* force seek on first access */
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first_data_segment = -1; /* unknown */
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ftape_zap_read_buffers();
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ftape_zap_write_buffers();
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ftape_reset_position();
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return 0;
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}
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int ftape_abort_operation(void)
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{
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TRACE_FUN(5, "ftape_abort_operation");
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int result = 0;
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int i;
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int status;
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if (runner_status == running) {
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TRACE(5, "aborting runner, waiting");
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runner_status = do_abort;
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/* set timeout so that the tape will run to logical EOT
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* if we missed the last sector and there are no queue pulses.
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*/
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result = ftape_dumb_stop();
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if (result == 0) {
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runner_status = idle;
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}
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}
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if (runner_status != idle) {
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if (runner_status == do_abort) {
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TRACE(5, "forcing runner abort");
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}
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TRACE(5, "stopping tape");
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result = ftape_command_wait(QIC_STOP_TAPE, timeout.stop, &status);
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location.known = 0;
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runner_status = idle;
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}
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for (i = 0; i < NR_BUFFERS; ++i) {
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buffer[i].status = waiting;
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}
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head = tail = 0;
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TRACE_EXIT;
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return result;
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}
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int lookup_vendor_id(int vendor_id)
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{
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int i = 0;
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while (vendors[i].vendor_id != vendor_id) {
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if (++i >= NR_ITEMS(vendors)) {
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return -1;
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}
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}
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return i;
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}
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void ftape_detach_drive(void)
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{
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TRACE_FUN(8, "ftape_detach_drive");
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TRACE(5, "disabling tape drive and fdc");
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ftape_put_drive_to_sleep(drive_type);
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fdc_catch_stray_interrupts(1); /* one always comes */
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fdc_disable();
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fdc_release_irq_and_dma();
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TRACE_EXIT;
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}
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static void clear_history(void)
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{
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history.used = 0;
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history.id_am_errors =
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history.id_crc_errors =
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history.data_am_errors =
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history.data_crc_errors =
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history.overrun_errors =
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history.no_data_errors =
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history.retries =
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history.crc_errors =
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history.crc_failures =
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history.ecc_failures =
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history.corrected =
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history.defects =
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history.rewinds = 0;
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}
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int ftape_activate_drive(vendor_struct * drive_type)
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{
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TRACE_FUN(5, "ftape_activate_drive");
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int result = 0;
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/* If we already know the drive type, wake it up.
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* Else try to find out what kind of drive is attached.
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*/
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if (drive_type->wake_up != unknown_wake_up) {
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TRACE(5, "enabling tape drive and fdc");
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result = ftape_wakeup_drive(drive_type->wake_up);
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if (result < 0) {
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TRACE(1, "known wakeup method failed");
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}
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} else {
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int old_tracing = tracing;
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wake_up_types method;
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/* Try to awaken the drive using all known methods.
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* Lower tracing for a while.
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*/
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if (tracing <= 4) {
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tracing = 0;
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| 240 |
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}
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for (method = no_wake_up; method < NR_ITEMS(methods); ++method) {
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drive_type->wake_up = method;
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#if 0
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/* Test setup for dual drive configuration in dodo.
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* /dev/rft2 uses mountain wakeup only -> Archive QIC-80
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| 246 |
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* /dev/rft3 uses colorado wakeup only -> Jumbo QIC-40
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| 247 |
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* Other systems will use the normal scheme.
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| 248 |
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*/
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if ((FTAPE_UNIT < 2) ||
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(FTAPE_UNIT == 2 && method == wake_up_mountain) ||
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(FTAPE_UNIT == 3 && method == wake_up_colorado)) {
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result = ftape_wakeup_drive(drive_type->wake_up);
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} else {
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| 254 |
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result = -EIO;
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}
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| 256 |
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#else
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result = ftape_wakeup_drive(drive_type->wake_up);
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#endif
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if (result >= 0) {
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int tracing = old_tracing; /* fool TRACE */
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TRACEx1(2, "drive wakeup method: %s",
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methods[drive_type->wake_up].name);
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break;
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}
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| 265 |
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}
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tracing = old_tracing;
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| 267 |
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if (method >= NR_ITEMS(methods)) {
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/* no response at all, cannot open this drive */
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drive_type->wake_up = unknown_wake_up;
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| 270 |
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TRACE(1, "no tape drive found !");
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| 271 |
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tracing = old_tracing;
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| 272 |
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result = -ENODEV;
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| 273 |
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}
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| 274 |
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}
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| 275 |
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TRACE_EXIT;
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| 276 |
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return result;
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| 277 |
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}
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| 278 |
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|
| 279 |
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int ftape_get_drive_status(int *new_tape, int *no_tape, int *wp_tape)
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| 280 |
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{
|
| 281 |
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TRACE_FUN(5, "ftape_get_drive_status");
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| 282 |
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int result;
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| 283 |
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int status;
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| 284 |
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| 285 |
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*no_tape =
|
| 286 |
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*wp_tape = 0;
|
| 287 |
|
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/* Tape drive is activated now.
|
| 288 |
|
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* First clear error status if present.
|
| 289 |
|
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*/
|
| 290 |
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do {
|
| 291 |
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result = ftape_ready_wait(timeout.reset, &status);
|
| 292 |
|
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if (result < 0) {
|
| 293 |
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if (result == -ETIME) {
|
| 294 |
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TRACE(1, "ftape_ready_wait timeout");
|
| 295 |
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} else if (result == -EINTR) {
|
| 296 |
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TRACE(1, "ftape_ready_wait aborted");
|
| 297 |
|
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} else {
|
| 298 |
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TRACE(1, "ftape_ready_wait failed");
|
| 299 |
|
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}
|
| 300 |
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result = -EIO;
|
| 301 |
|
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break;
|
| 302 |
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}
|
| 303 |
|
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/* Clear error condition (drive is ready !)
|
| 304 |
|
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*/
|
| 305 |
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if (status & QIC_STATUS_ERROR) {
|
| 306 |
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int error;
|
| 307 |
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int command;
|
| 308 |
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|
| 309 |
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TRACE(1, "error status set");
|
| 310 |
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result = ftape_report_error(&error, &command, 1);
|
| 311 |
|
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if (result < 0) {
|
| 312 |
|
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TRACEi(1, "report_error_code failed:", result);
|
| 313 |
|
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ftape_reset_drive(); /* hope it's working next time */
|
| 314 |
|
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init_drive_needed = 1;
|
| 315 |
|
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result = -EIO;
|
| 316 |
|
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break;
|
| 317 |
|
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} else if (error != 0) {
|
| 318 |
|
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TRACEi(4, "error code :", error);
|
| 319 |
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TRACEi(4, "error command:", command);
|
| 320 |
|
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}
|
| 321 |
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}
|
| 322 |
|
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if (status & QIC_STATUS_NEW_CARTRIDGE) {
|
| 323 |
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int error;
|
| 324 |
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int command;
|
| 325 |
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int old_tracing = tracing;
|
| 326 |
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|
| 327 |
|
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/* Undocumented feature: Must clear (not present!) error
|
| 328 |
|
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* here or we'll fail later.
|
| 329 |
|
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*/
|
| 330 |
|
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tracing = 0;
|
| 331 |
|
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ftape_report_error(&error, &command, 1);
|
| 332 |
|
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tracing = old_tracing;
|
| 333 |
|
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TRACE(3, "status: new cartridge");
|
| 334 |
|
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*new_tape = 1;
|
| 335 |
|
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}
|
| 336 |
|
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} while (status & QIC_STATUS_ERROR);
|
| 337 |
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|
| 338 |
|
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*no_tape = !(status & QIC_STATUS_CARTRIDGE_PRESENT);
|
| 339 |
|
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*wp_tape = (status & QIC_STATUS_WRITE_PROTECT);
|
| 340 |
|
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if (*no_tape) {
|
| 341 |
|
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TRACE(1, "no cartridge present");
|
| 342 |
|
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} else {
|
| 343 |
|
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if (*wp_tape) {
|
| 344 |
|
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TRACE(2, "Write protected cartridge");
|
| 345 |
|
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}
|
| 346 |
|
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}
|
| 347 |
|
|
TRACE_EXIT;
|
| 348 |
|
|
return result;
|
| 349 |
|
|
}
|
| 350 |
|
|
|
| 351 |
|
|
void ftape_log_vendor_id(void)
|
| 352 |
|
|
{
|
| 353 |
|
|
TRACE_FUN(5, "ftape_log_vendor_id");
|
| 354 |
|
|
int vendor_index;
|
| 355 |
|
|
|
| 356 |
|
|
ftape_report_vendor_id(&drive_type.vendor_id);
|
| 357 |
|
|
vendor_index = lookup_vendor_id(drive_type.vendor_id);
|
| 358 |
|
|
if (drive_type.vendor_id == UNKNOWN_VENDOR &&
|
| 359 |
|
|
drive_type.wake_up == wake_up_colorado) {
|
| 360 |
|
|
vendor_index = 0;
|
| 361 |
|
|
drive_type.vendor_id = 0; /* hack to get rid of all this mail */
|
| 362 |
|
|
}
|
| 363 |
|
|
if (vendor_index < 0) {
|
| 364 |
|
|
/* Unknown vendor id, first time opening device.
|
| 365 |
|
|
* The drive_type remains set to type found at wakeup time, this
|
| 366 |
|
|
* will probably keep the driver operating for this new vendor.
|
| 367 |
|
|
*/
|
| 368 |
|
|
TRACE(-1, "============ unknown vendor id ===========");
|
| 369 |
|
|
TRACE(-1, "A new, yet unsupported tape drive is found");
|
| 370 |
|
|
TRACE(-1, "Please report the following values:");
|
| 371 |
|
|
TRACEx1(-1, " Vendor id : 0x%04x", drive_type.vendor_id);
|
| 372 |
|
|
TRACEx1(-1, " Wakeup method : %s", methods[drive_type.wake_up].name);
|
| 373 |
|
|
TRACE(-1, "And a description of your tape drive to:");
|
| 374 |
|
|
TRACE(-1, "Claus Heine <claus@momo.math.rwth-aachen.de>");
|
| 375 |
|
|
TRACE(-1, "==========================================");
|
| 376 |
|
|
drive_type.speed = 500; /* deci-ips: very safe value */
|
| 377 |
|
|
} else {
|
| 378 |
|
|
drive_type.name = vendors[vendor_index].name;
|
| 379 |
|
|
drive_type.speed = vendors[vendor_index].speed;
|
| 380 |
|
|
TRACEx1(3, "tape drive type: %s", drive_type.name);
|
| 381 |
|
|
/* scan all methods for this vendor_id in table */
|
| 382 |
|
|
while (drive_type.wake_up != vendors[vendor_index].wake_up) {
|
| 383 |
|
|
if (vendor_index < NR_ITEMS(vendors) - 1 &&
|
| 384 |
|
|
vendors[vendor_index + 1].vendor_id == drive_type.vendor_id) {
|
| 385 |
|
|
++vendor_index;
|
| 386 |
|
|
} else {
|
| 387 |
|
|
break;
|
| 388 |
|
|
}
|
| 389 |
|
|
}
|
| 390 |
|
|
if (drive_type.wake_up != vendors[vendor_index].wake_up) {
|
| 391 |
|
|
TRACE(-1, "==========================================");
|
| 392 |
|
|
TRACE(-1, "wakeup type mismatch:");
|
| 393 |
|
|
TRACEx2(-1, "found: %s, expected: %s",
|
| 394 |
|
|
methods[drive_type.wake_up].name,
|
| 395 |
|
|
methods[vendors[vendor_index].wake_up].name);
|
| 396 |
|
|
TRACE(-1, "please report this to <claus@momo.math.rwth-aachen.de>");
|
| 397 |
|
|
TRACE(-1, "==========================================");
|
| 398 |
|
|
}
|
| 399 |
|
|
}
|
| 400 |
|
|
TRACE_EXIT;
|
| 401 |
|
|
}
|
| 402 |
|
|
|
| 403 |
|
|
void ftape_calc_timeouts(void)
|
| 404 |
|
|
{
|
| 405 |
|
|
TRACE_FUN(8, "ftape_calc_timeouts");
|
| 406 |
|
|
int speed; /* deci-ips ! */
|
| 407 |
|
|
int length;
|
| 408 |
|
|
|
| 409 |
|
|
/* tape transport speed
|
| 410 |
|
|
* data rate: QIC-40 QIC-80 QIC-3010 QIC-3020
|
| 411 |
|
|
*
|
| 412 |
|
|
* 250 Kbps 25 ips n/a n/a n/a
|
| 413 |
|
|
* 500 Kbps 50 ips 34 ips 22.6 ips n/a
|
| 414 |
|
|
* 1 Mbps n/a 68 ips 45.2 ips 22.6 ips
|
| 415 |
|
|
* 2 Mbps n/a n/a n/a 45.2 ips
|
| 416 |
|
|
*
|
| 417 |
|
|
* fast tape transport speed is at least 68 ips.
|
| 418 |
|
|
*/
|
| 419 |
|
|
switch (qic_std) {
|
| 420 |
|
|
case QIC_TAPE_QIC40:
|
| 421 |
|
|
speed = (ftape_data_rate == 3) ? 250 : 500;
|
| 422 |
|
|
break;
|
| 423 |
|
|
case QIC_TAPE_QIC80:
|
| 424 |
|
|
speed = (ftape_data_rate == 2) ? 340 : 680;
|
| 425 |
|
|
break;
|
| 426 |
|
|
case QIC_TAPE_QIC3010:
|
| 427 |
|
|
speed = (ftape_data_rate == 2) ? 226 : 452;
|
| 428 |
|
|
break;
|
| 429 |
|
|
case QIC_TAPE_QIC3020:
|
| 430 |
|
|
speed = (ftape_data_rate == 1) ? 226 : 452;
|
| 431 |
|
|
break;
|
| 432 |
|
|
default:
|
| 433 |
|
|
TRACE(-1, "Unknown qic_std (bug) ?");
|
| 434 |
|
|
speed = 500;
|
| 435 |
|
|
break;
|
| 436 |
|
|
}
|
| 437 |
|
|
if (tape_len <= 0) {
|
| 438 |
|
|
/* Handle unknown length tapes as 1100 ft ones (worst case)
|
| 439 |
|
|
*/
|
| 440 |
|
|
TRACE(1, "Unknown tape length, using worst case timing values!");
|
| 441 |
|
|
length = 1100;
|
| 442 |
|
|
} else {
|
| 443 |
|
|
length = tape_len;
|
| 444 |
|
|
}
|
| 445 |
|
|
if (drive_type.speed == 0) {
|
| 446 |
|
|
unsigned long t0;
|
| 447 |
|
|
int dt;
|
| 448 |
|
|
|
| 449 |
|
|
ftape_seek_to_bot();
|
| 450 |
|
|
t0 = jiffies;
|
| 451 |
|
|
ftape_seek_to_eot();
|
| 452 |
|
|
ftape_seek_to_bot();
|
| 453 |
|
|
dt = (int) ((jiffies - t0) * MSPT);
|
| 454 |
|
|
drive_type.speed = (2 * 12 * length * 1000) / dt;
|
| 455 |
|
|
TRACE(-1, "==========================================");
|
| 456 |
|
|
TRACEx1(-1, "drive : %s", drive_type.name);
|
| 457 |
|
|
TRACEx2(-1, "delta time = %d, length = %d", dt, length);
|
| 458 |
|
|
TRACEx1(-1, "has max tape speed of %d ips", drive_type.speed);
|
| 459 |
|
|
TRACE(-1, "please report this to <claus@momo.math.rwth-aachen.de>");
|
| 460 |
|
|
TRACE(-1, "==========================================");
|
| 461 |
|
|
}
|
| 462 |
|
|
/* time to go from bot to eot at normal speed (data rate):
|
| 463 |
|
|
* time = (1+delta) * length (ft) * 12 (inch/ft) / speed (ips)
|
| 464 |
|
|
* delta = 10 % for seek speed, 20 % for rewind speed.
|
| 465 |
|
|
*/
|
| 466 |
|
|
timeout.seek = (length * 132 * SECOND) / speed;
|
| 467 |
|
|
timeout.rewind = (length * 144 * SECOND) / (10 * drive_type.speed);
|
| 468 |
|
|
timeout.reset = 20 * SECOND + timeout.rewind;
|
| 469 |
|
|
TRACEx2(4, "speed = %d, length = %d", speed, length);
|
| 470 |
|
|
TRACEx1(4, "seek timeout: %d sec", (timeout.seek + 500) / 1000);
|
| 471 |
|
|
TRACEx1(4, "rewind timeout: %d sec", (timeout.rewind + 500) / 1000);
|
| 472 |
|
|
TRACE_EXIT;
|
| 473 |
|
|
}
|
| 474 |
|
|
|
| 475 |
|
|
int ftape_init_drive(int *formatted)
|
| 476 |
|
|
{
|
| 477 |
|
|
TRACE_FUN(5, "ftape_init_drive");
|
| 478 |
|
|
int result = 0;
|
| 479 |
|
|
int status;
|
| 480 |
|
|
|
| 481 |
|
|
result = ftape_report_raw_drive_status(&status);
|
| 482 |
|
|
if (result >= 0 && (status & QIC_STATUS_CARTRIDGE_PRESENT)) {
|
| 483 |
|
|
if (!(status & QIC_STATUS_AT_BOT)) {
|
| 484 |
|
|
/* Antique drives will get here after a soft reset,
|
| 485 |
|
|
* modern ones only if the driver is loaded when the
|
| 486 |
|
|
* tape wasn't rewound properly.
|
| 487 |
|
|
*/
|
| 488 |
|
|
ftape_seek_to_bot();
|
| 489 |
|
|
}
|
| 490 |
|
|
if (!(status & QIC_STATUS_REFERENCED)) {
|
| 491 |
|
|
TRACE(5, "starting seek_load_point");
|
| 492 |
|
|
result = ftape_command_wait(QIC_SEEK_LOAD_POINT,
|
| 493 |
|
|
timeout.reset, &status);
|
| 494 |
|
|
if (result < 0) {
|
| 495 |
|
|
TRACE(1, "seek_load_point failed (command)");
|
| 496 |
|
|
}
|
| 497 |
|
|
}
|
| 498 |
|
|
}
|
| 499 |
|
|
if (result >= 0) {
|
| 500 |
|
|
int rate;
|
| 501 |
|
|
|
| 502 |
|
|
*formatted = (status & QIC_STATUS_REFERENCED);
|
| 503 |
|
|
if (!*formatted) {
|
| 504 |
|
|
TRACE(1, "Warning: tape is not formatted !");
|
| 505 |
|
|
}
|
| 506 |
|
|
/* Select highest rate supported by both fdc and drive.
|
| 507 |
|
|
* Start with highest rate supported by the fdc.
|
| 508 |
|
|
*/
|
| 509 |
|
|
if (fdc.type >= i82078_1)
|
| 510 |
|
|
rate = 0;
|
| 511 |
|
|
else if (fdc.type >= i82077)
|
| 512 |
|
|
rate = 1;
|
| 513 |
|
|
else
|
| 514 |
|
|
rate = 2;
|
| 515 |
|
|
do {
|
| 516 |
|
|
result = ftape_set_data_rate(rate);
|
| 517 |
|
|
if (result >= 0) {
|
| 518 |
|
|
ftape_calc_timeouts();
|
| 519 |
|
|
break;
|
| 520 |
|
|
}
|
| 521 |
|
|
++rate;
|
| 522 |
|
|
} while (rate < 4);
|
| 523 |
|
|
if (result < 0) {
|
| 524 |
|
|
result = -EIO;
|
| 525 |
|
|
}
|
| 526 |
|
|
}
|
| 527 |
|
|
if (result >= 0) {
|
| 528 |
|
|
/* Tape should be at bot if new cartridge ! */
|
| 529 |
|
|
ftape_new_cartridge();
|
| 530 |
|
|
}
|
| 531 |
|
|
init_drive_needed = 0;
|
| 532 |
|
|
TRACE_EXIT;
|
| 533 |
|
|
return result;
|
| 534 |
|
|
}
|
| 535 |
|
|
|
| 536 |
|
|
/* OPEN routine called by kernel-interface code
|
| 537 |
|
|
*/
|
| 538 |
|
|
int _ftape_open(void)
|
| 539 |
|
|
{
|
| 540 |
|
|
TRACE_FUN(8, "_ftape_open");
|
| 541 |
|
|
int result;
|
| 542 |
|
|
static int new_tape = 1;
|
| 543 |
|
|
|
| 544 |
|
|
result = fdc_init();
|
| 545 |
|
|
if (result >= 0) {
|
| 546 |
|
|
result = ftape_activate_drive(&drive_type);
|
| 547 |
|
|
if (result < 0) {
|
| 548 |
|
|
fdc_disable();
|
| 549 |
|
|
fdc_release_irq_and_dma();
|
| 550 |
|
|
|
| 551 |
|
|
} else {
|
| 552 |
|
|
result = ftape_get_drive_status(&new_tape, &no_tape, &write_protected);
|
| 553 |
|
|
if (result < 0) {
|
| 554 |
|
|
ftape_detach_drive();
|
| 555 |
|
|
} else {
|
| 556 |
|
|
if (drive_type.vendor_id == UNKNOWN_VENDOR) {
|
| 557 |
|
|
ftape_log_vendor_id();
|
| 558 |
|
|
}
|
| 559 |
|
|
if (no_tape) {
|
| 560 |
|
|
ftape_offline = 1;
|
| 561 |
|
|
} else if (new_tape) {
|
| 562 |
|
|
ftape_offline = 0;
|
| 563 |
|
|
init_drive_needed = 1;
|
| 564 |
|
|
read_only = 0; /* enable writes again */
|
| 565 |
|
|
}
|
| 566 |
|
|
if (!ftape_offline && init_drive_needed) {
|
| 567 |
|
|
result = ftape_init_drive(&formatted);
|
| 568 |
|
|
if (result >= 0) {
|
| 569 |
|
|
new_tape = 0;
|
| 570 |
|
|
} else {
|
| 571 |
|
|
ftape_detach_drive();
|
| 572 |
|
|
}
|
| 573 |
|
|
}
|
| 574 |
|
|
if (result >= 0) {
|
| 575 |
|
|
clear_history();
|
| 576 |
|
|
}
|
| 577 |
|
|
}
|
| 578 |
|
|
}
|
| 579 |
|
|
}
|
| 580 |
|
|
TRACE_EXIT;
|
| 581 |
|
|
return result;
|
| 582 |
|
|
}
|
| 583 |
|
|
|
| 584 |
|
|
/* RELEASE routine called by kernel-interface code
|
| 585 |
|
|
*/
|
| 586 |
|
|
int _ftape_close(void)
|
| 587 |
|
|
{
|
| 588 |
|
|
TRACE_FUN(8, "_ftape_close");
|
| 589 |
|
|
int result = 0;
|
| 590 |
|
|
int last_segment = 0;
|
| 591 |
|
|
|
| 592 |
|
|
if (!ftape_offline) {
|
| 593 |
|
|
result = ftape_flush_buffers();
|
| 594 |
|
|
last_segment = ftape_seg_pos - 1;
|
| 595 |
|
|
if (!(ftape_unit & FTAPE_NO_REWIND)) {
|
| 596 |
|
|
if (result >= 0) {
|
| 597 |
|
|
result = ftape_update_header_segments(NULL, 1);
|
| 598 |
|
|
if (result < 0) {
|
| 599 |
|
|
TRACE(1, "error: update of header segments failed");
|
| 600 |
|
|
}
|
| 601 |
|
|
} else {
|
| 602 |
|
|
TRACE(1, "error: unable to update header segments");
|
| 603 |
|
|
}
|
| 604 |
|
|
}
|
| 605 |
|
|
ftape_abort_operation();
|
| 606 |
|
|
if (!(ftape_unit & FTAPE_NO_REWIND)) {
|
| 607 |
|
|
if (!no_tape) {
|
| 608 |
|
|
TRACE(5, "rewinding tape");
|
| 609 |
|
|
result = ftape_seek_to_bot();
|
| 610 |
|
|
}
|
| 611 |
|
|
ftape_reset_position();
|
| 612 |
|
|
ftape_zap_read_buffers();
|
| 613 |
|
|
ftape_zap_write_buffers();
|
| 614 |
|
|
}
|
| 615 |
|
|
}
|
| 616 |
|
|
ftape_detach_drive();
|
| 617 |
|
|
fdc_uninit();
|
| 618 |
|
|
if (history.used) {
|
| 619 |
|
|
TRACE(3, "== Non-fatal errors this run: ==");
|
| 620 |
|
|
TRACE(3, "fdc isr statistics:");
|
| 621 |
|
|
TRACEi(3, " id_am_errors :", history.id_am_errors);
|
| 622 |
|
|
TRACEi(3, " id_crc_errors :", history.id_crc_errors);
|
| 623 |
|
|
TRACEi(3, " data_am_errors :", history.data_am_errors);
|
| 624 |
|
|
TRACEi(3, " data_crc_errors :", history.data_crc_errors);
|
| 625 |
|
|
TRACEi(3, " overrun_errors :", history.overrun_errors);
|
| 626 |
|
|
TRACEi(3, " no_data_errors :", history.no_data_errors);
|
| 627 |
|
|
TRACEi(3, " retries :", history.retries);
|
| 628 |
|
|
if (history.used & 1) {
|
| 629 |
|
|
TRACE(3, "ecc statistics:");
|
| 630 |
|
|
TRACEi(3, " crc_errors :", history.crc_errors);
|
| 631 |
|
|
TRACEi(3, " crc_failures :", history.crc_failures);
|
| 632 |
|
|
TRACEi(3, " ecc_failures :", history.ecc_failures);
|
| 633 |
|
|
TRACEi(3, " sectors corrected:", history.corrected);
|
| 634 |
|
|
}
|
| 635 |
|
|
TRACEx2(3, "media defects : %d%s", history.defects,
|
| 636 |
|
|
history.defects ? " !!!" : "");
|
| 637 |
|
|
TRACEi(3, "repositions :", history.rewinds);
|
| 638 |
|
|
TRACEi(3, "last segment :", last_segment);
|
| 639 |
|
|
}
|
| 640 |
|
|
if (going_offline) {
|
| 641 |
|
|
going_offline = 0;
|
| 642 |
|
|
ftape_offline = 1;
|
| 643 |
|
|
}
|
| 644 |
|
|
TRACE_EXIT;
|
| 645 |
|
|
return result;
|
| 646 |
|
|
}
|
| 647 |
|
|
|
| 648 |
|
|
/* IOCTL routine called by kernel-interface code
|
| 649 |
|
|
*/
|
| 650 |
|
|
int _ftape_ioctl(unsigned int command, void *arg)
|
| 651 |
|
|
{
|
| 652 |
|
|
TRACE_FUN(8, "ftape_ioctl");
|
| 653 |
|
|
int result = EINVAL;
|
| 654 |
|
|
union {
|
| 655 |
|
|
struct mtop mtop;
|
| 656 |
|
|
struct mtget mtget;
|
| 657 |
|
|
} krnl_arg;
|
| 658 |
|
|
int arg_size = (command & IOCSIZE_MASK) >> IOCSIZE_SHIFT;
|
| 659 |
|
|
|
| 660 |
|
|
/* This check will only catch arguments that are too large !
|
| 661 |
|
|
*/
|
| 662 |
|
|
if ((command & IOC_INOUT) && arg_size > sizeof(krnl_arg)) {
|
| 663 |
|
|
TRACEi(1, "bad argument size:", arg_size);
|
| 664 |
|
|
TRACE_EXIT;
|
| 665 |
|
|
return -EINVAL;
|
| 666 |
|
|
}
|
| 667 |
|
|
if (command & IOC_IN) {
|
| 668 |
|
|
int error = verify_area(VERIFY_READ, arg, arg_size);
|
| 669 |
|
|
if (error) {
|
| 670 |
|
|
TRACE_EXIT;
|
| 671 |
|
|
return error;
|
| 672 |
|
|
}
|
| 673 |
|
|
memcpy_fromfs(&krnl_arg.mtop, arg, arg_size);
|
| 674 |
|
|
}
|
| 675 |
|
|
TRACEx1(5, "called with ioctl command: 0x%08x", command);
|
| 676 |
|
|
switch (command) {
|
| 677 |
|
|
/* cpio compatibility
|
| 678 |
|
|
* mtrasx and mtreset are mt extension by Hennus Bergman
|
| 679 |
|
|
* mtseek and mttell are mt extension by eddy olk
|
| 680 |
|
|
*/
|
| 681 |
|
|
case MTIOCTOP:
|
| 682 |
|
|
TRACEx1(5, "calling MTIOCTOP command: 0x%08x", krnl_arg.mtop.mt_op);
|
| 683 |
|
|
switch (krnl_arg.mtop.mt_op) {
|
| 684 |
|
|
case MTNOP:
|
| 685 |
|
|
/* gnu mt calls MTNOP before MTIOCGET to set status */
|
| 686 |
|
|
result = 0;
|
| 687 |
|
|
break;
|
| 688 |
|
|
case MTRESET:
|
| 689 |
|
|
result = ftape_reset_drive();
|
| 690 |
|
|
init_drive_needed = 1;
|
| 691 |
|
|
if (result < 0 || ftape_offline) {
|
| 692 |
|
|
break;
|
| 693 |
|
|
}
|
| 694 |
|
|
result = ftape_seek_to_bot();
|
| 695 |
|
|
ftape_reset_position();
|
| 696 |
|
|
break;
|
| 697 |
|
|
case MTREW:
|
| 698 |
|
|
case MTOFFL:
|
| 699 |
|
|
if (ftape_offline) {
|
| 700 |
|
|
result = -EIO;
|
| 701 |
|
|
break;
|
| 702 |
|
|
}
|
| 703 |
|
|
ftape_flush_buffers();
|
| 704 |
|
|
ftape_update_header_segments(NULL, 1);
|
| 705 |
|
|
result = ftape_seek_to_bot();
|
| 706 |
|
|
ftape_reset_position();
|
| 707 |
|
|
if (krnl_arg.mtop.mt_op == MTOFFL) {
|
| 708 |
|
|
going_offline = 1;
|
| 709 |
|
|
TRACE(4, "Putting tape drive offline");
|
| 710 |
|
|
}
|
| 711 |
|
|
result = 0;
|
| 712 |
|
|
break;
|
| 713 |
|
|
case MTRETEN:
|
| 714 |
|
|
if (ftape_offline) {
|
| 715 |
|
|
result = -EIO;
|
| 716 |
|
|
break;
|
| 717 |
|
|
}
|
| 718 |
|
|
result = ftape_seek_to_eot();
|
| 719 |
|
|
if (result >= 0) {
|
| 720 |
|
|
result = ftape_seek_to_bot();
|
| 721 |
|
|
}
|
| 722 |
|
|
ftape_reset_position();
|
| 723 |
|
|
break;
|
| 724 |
|
|
case MTERASE:
|
| 725 |
|
|
if (ftape_offline) {
|
| 726 |
|
|
result = -EIO;
|
| 727 |
|
|
break;
|
| 728 |
|
|
}
|
| 729 |
|
|
result = ftape_erase();
|
| 730 |
|
|
break;
|
| 731 |
|
|
case MTEOM:
|
| 732 |
|
|
if (ftape_offline) {
|
| 733 |
|
|
result = -EIO;
|
| 734 |
|
|
break;
|
| 735 |
|
|
}
|
| 736 |
|
|
result = ftape_seek_eom();
|
| 737 |
|
|
break;
|
| 738 |
|
|
case MTFSFM:
|
| 739 |
|
|
if (ftape_offline) {
|
| 740 |
|
|
result = -EIO;
|
| 741 |
|
|
break;
|
| 742 |
|
|
}
|
| 743 |
|
|
eof_mark = 1; /* position ready to extend */
|
| 744 |
|
|
case MTFSF:
|
| 745 |
|
|
if (ftape_offline) {
|
| 746 |
|
|
result = -EIO;
|
| 747 |
|
|
break;
|
| 748 |
|
|
}
|
| 749 |
|
|
result = ftape_seek_eof(krnl_arg.mtop.mt_count);
|
| 750 |
|
|
break;
|
| 751 |
|
|
case MTBSFM:
|
| 752 |
|
|
if (ftape_offline) {
|
| 753 |
|
|
result = -EIO;
|
| 754 |
|
|
break;
|
| 755 |
|
|
}
|
| 756 |
|
|
eof_mark = 1; /* position ready to extend */
|
| 757 |
|
|
case MTBSF:
|
| 758 |
|
|
if (ftape_offline) {
|
| 759 |
|
|
result = -EIO;
|
| 760 |
|
|
break;
|
| 761 |
|
|
}
|
| 762 |
|
|
result = ftape_seek_eof(-krnl_arg.mtop.mt_count);
|
| 763 |
|
|
break;
|
| 764 |
|
|
case MTFSR:
|
| 765 |
|
|
if (ftape_offline) {
|
| 766 |
|
|
result = -EIO;
|
| 767 |
|
|
break;
|
| 768 |
|
|
}
|
| 769 |
|
|
tracing = krnl_arg.mtop.mt_count;
|
| 770 |
|
|
TRACEx1(2, "tracing set to %d", tracing);
|
| 771 |
|
|
result = 0;
|
| 772 |
|
|
break;
|
| 773 |
|
|
case MTBSR:
|
| 774 |
|
|
if (ftape_offline) {
|
| 775 |
|
|
result = -EIO;
|
| 776 |
|
|
break;
|
| 777 |
|
|
}
|
| 778 |
|
|
#if 0
|
| 779 |
|
|
result = ftape_fix();
|
| 780 |
|
|
#else
|
| 781 |
|
|
result = 0;
|
| 782 |
|
|
#endif
|
| 783 |
|
|
break;
|
| 784 |
|
|
case MTWEOF:
|
| 785 |
|
|
if (ftape_offline) {
|
| 786 |
|
|
result = -EIO;
|
| 787 |
|
|
break;
|
| 788 |
|
|
}
|
| 789 |
|
|
result = ftape_weof(krnl_arg.mtop.mt_count, ftape_seg_pos, 1);
|
| 790 |
|
|
if (result >= 0) {
|
| 791 |
|
|
ftape_seg_pos += krnl_arg.mtop.mt_count - 1;
|
| 792 |
|
|
}
|
| 793 |
|
|
break;
|
| 794 |
|
|
/* MTRASx and MTRESET are mt extension by Hennus Bergman
|
| 795 |
|
|
*/
|
| 796 |
|
|
case MTRAS1:
|
| 797 |
|
|
case MTRAS2:
|
| 798 |
|
|
case MTRAS3:
|
| 799 |
|
|
case MTSEEK:
|
| 800 |
|
|
case MTTELL:
|
| 801 |
|
|
default:
|
| 802 |
|
|
TRACEi(1, "MTIOCTOP sub-command not implemented:", krnl_arg.mtop.mt_op);
|
| 803 |
|
|
result = -EIO;
|
| 804 |
|
|
break;
|
| 805 |
|
|
}
|
| 806 |
|
|
break;
|
| 807 |
|
|
case MTIOCGET:
|
| 808 |
|
|
krnl_arg.mtget.mt_type = drive_type.vendor_id + 0x800000;
|
| 809 |
|
|
krnl_arg.mtget.mt_resid = 0; /* not implemented */
|
| 810 |
|
|
krnl_arg.mtget.mt_dsreg = 0; /* status register */
|
| 811 |
|
|
krnl_arg.mtget.mt_gstat = /* device independent status */
|
| 812 |
|
|
((ftape_offline) ? 0 : GMT_ONLINE(-1L)) |
|
| 813 |
|
|
((write_protected) ? GMT_WR_PROT(-1L) : 0) |
|
| 814 |
|
|
((no_tape) ? GMT_DR_OPEN(-1L) : 0);
|
| 815 |
|
|
krnl_arg.mtget.mt_erreg = ftape_last_error; /* error register */
|
| 816 |
|
|
result = ftape_file_no(&krnl_arg.mtget.mt_fileno,
|
| 817 |
|
|
&krnl_arg.mtget.mt_blkno);
|
| 818 |
|
|
break;
|
| 819 |
|
|
case MTIOCPOS:
|
| 820 |
|
|
TRACE(5, "Mag tape ioctl command: MTIOCPOS");
|
| 821 |
|
|
TRACE(1, "MTIOCPOS command not implemented");
|
| 822 |
|
|
break;
|
| 823 |
|
|
default:
|
| 824 |
|
|
result = -EINVAL;
|
| 825 |
|
|
break;
|
| 826 |
|
|
}
|
| 827 |
|
|
if (command & IOC_OUT) {
|
| 828 |
|
|
int error = verify_area(VERIFY_WRITE, arg, arg_size);
|
| 829 |
|
|
if (error) {
|
| 830 |
|
|
TRACE_EXIT;
|
| 831 |
|
|
return error;
|
| 832 |
|
|
}
|
| 833 |
|
|
memcpy_tofs(arg, &krnl_arg, arg_size);
|
| 834 |
|
|
}
|
| 835 |
|
|
TRACE_EXIT;
|
| 836 |
|
|
return result;
|
| 837 |
|
|
}
|
| 838 |
|
|
|
| 839 |
|
|
void ftape_init_driver(void)
|
| 840 |
|
|
{
|
| 841 |
|
|
drive_type.vendor_id = UNKNOWN_VENDOR;
|
| 842 |
|
|
drive_type.speed = 0;
|
| 843 |
|
|
drive_type.wake_up = unknown_wake_up;
|
| 844 |
|
|
drive_type.name = "Unknown";
|
| 845 |
|
|
|
| 846 |
|
|
timeout.seek = 650 * SECOND;
|
| 847 |
|
|
timeout.reset = 670 * SECOND;
|
| 848 |
|
|
timeout.rewind = 650 * SECOND;
|
| 849 |
|
|
timeout.head_seek = 15 * SECOND;
|
| 850 |
|
|
timeout.stop = 5 * SECOND;
|
| 851 |
|
|
timeout.pause = 16 * SECOND;
|
| 852 |
|
|
|
| 853 |
|
|
qic_std = -1;
|
| 854 |
|
|
tape_len = -1;
|
| 855 |
|
|
current_command = 0;
|
| 856 |
|
|
current_cylinder = -1;
|
| 857 |
|
|
|
| 858 |
|
|
segments_per_track = 102;
|
| 859 |
|
|
segments_per_head = 1020;
|
| 860 |
|
|
segments_per_cylinder = 4;
|
| 861 |
|
|
tracks_per_tape = 20;
|
| 862 |
|
|
ftape_failure = 1;
|
| 863 |
|
|
ftape_seg_pos = 0;
|
| 864 |
|
|
first_data_segment = -1;
|
| 865 |
|
|
ftape_state = idle;
|
| 866 |
|
|
no_tape = 1;
|
| 867 |
|
|
formatted = 0;
|
| 868 |
|
|
ftape_data_rate = 0;
|
| 869 |
|
|
going_offline = 0;
|
| 870 |
|
|
read_only = 0;
|
| 871 |
|
|
|
| 872 |
|
|
init_drive_needed = 1;
|
| 873 |
|
|
header_segment_1 = -1;
|
| 874 |
|
|
header_segment_2 = -1;
|
| 875 |
|
|
used_header_segment = -1;
|
| 876 |
|
|
location.track = -1;
|
| 877 |
|
|
location.known = 0;
|
| 878 |
|
|
tape_running = 0;
|
| 879 |
|
|
might_be_off_track = 1;
|
| 880 |
|
|
|
| 881 |
|
|
ftape_new_cartridge(); /* init some tape related variables */
|
| 882 |
|
|
ftape_init_bsm();
|
| 883 |
|
|
}
|
