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1275 |
phoenix |
/*
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* Copyright (C) 1993-1996 Bas Laarhoven,
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* (C) 1996-1997 Claus-Justus Heine.
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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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* $Source: /home/marcus/revision_ctrl_test/oc_cvs/cvs/or1k/linux/linux-2.4/drivers/char/ftape/lowlevel/ftape-read.c,v $
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* $Revision: 1.1.1.1 $
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* $Date: 2004-04-15 02:02:43 $
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*
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* This file contains the reading code
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* for the QIC-117 floppy-tape driver for Linux.
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*
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*/
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/mm.h>
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#include <asm/segment.h>
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#include <linux/ftape.h>
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#include <linux/qic117.h>
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#include "../lowlevel/ftape-tracing.h"
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#include "../lowlevel/ftape-read.h"
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#include "../lowlevel/ftape-io.h"
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#include "../lowlevel/ftape-ctl.h"
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#include "../lowlevel/ftape-rw.h"
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#include "../lowlevel/ftape-write.h"
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#include "../lowlevel/ftape-ecc.h"
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#include "../lowlevel/ftape-bsm.h"
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/* Global vars.
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*/
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/* Local vars.
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*/
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void ftape_zap_read_buffers(void)
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{
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int i;
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for (i = 0; i < ft_nr_buffers; ++i) {
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/* changed to "fit" with dynamic allocation of tape_buffer. --khp */
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ft_buffer[i]->status = waiting;
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ft_buffer[i]->bytes = 0;
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ft_buffer[i]->skip = 0;
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ft_buffer[i]->retry = 0;
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}
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/* ftape_reset_buffer(); */
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}
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static SectorMap convert_sector_map(buffer_struct * buff)
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{
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int i = 0;
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SectorMap bad_map = ftape_get_bad_sector_entry(buff->segment_id);
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SectorMap src_map = buff->soft_error_map | buff->hard_error_map;
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SectorMap dst_map = 0;
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TRACE_FUN(ft_t_any);
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if (bad_map || src_map) {
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TRACE(ft_t_flow, "bad_map = 0x%08lx", (long) bad_map);
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TRACE(ft_t_flow, "src_map = 0x%08lx", (long) src_map);
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}
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while (bad_map) {
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while ((bad_map & 1) == 0) {
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if (src_map & 1) {
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dst_map |= (1 << i);
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}
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src_map >>= 1;
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bad_map >>= 1;
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++i;
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}
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/* (bad_map & 1) == 1 */
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src_map >>= 1;
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bad_map >>= 1;
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}
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if (src_map) {
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dst_map |= (src_map << i);
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}
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if (dst_map) {
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TRACE(ft_t_flow, "dst_map = 0x%08lx", (long) dst_map);
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}
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TRACE_EXIT dst_map;
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}
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static int correct_and_copy_fraction(buffer_struct *buff, __u8 * destination,
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int start, int size)
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{
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struct memory_segment mseg;
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int result;
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SectorMap read_bad;
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TRACE_FUN(ft_t_any);
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mseg.read_bad = convert_sector_map(buff);
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mseg.marked_bad = 0; /* not used... */
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mseg.blocks = buff->bytes / FT_SECTOR_SIZE;
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mseg.data = buff->address;
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/* If there are no data sectors we can skip this segment.
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*/
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if (mseg.blocks <= 3) {
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TRACE_ABORT(0, ft_t_noise, "empty segment");
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}
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read_bad = mseg.read_bad;
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ft_history.crc_errors += count_ones(read_bad);
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result = ftape_ecc_correct_data(&mseg);
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if (read_bad != 0 || mseg.corrected != 0) {
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TRACE(ft_t_noise, "crc error map: 0x%08lx", (unsigned long)read_bad);
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TRACE(ft_t_noise, "corrected map: 0x%08lx", (unsigned long)mseg.corrected);
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ft_history.corrected += count_ones(mseg.corrected);
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}
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if (result == ECC_CORRECTED || result == ECC_OK) {
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if (result == ECC_CORRECTED) {
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TRACE(ft_t_info, "ecc corrected segment: %d", buff->segment_id);
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}
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if(start < 0) {
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start= 0;
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}
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if((start+size) > ((mseg.blocks - 3) * FT_SECTOR_SIZE)) {
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size = (mseg.blocks - 3) * FT_SECTOR_SIZE - start;
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}
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if (size < 0) {
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size= 0;
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}
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if(size > 0) {
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memcpy(destination + start, mseg.data + start, size);
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}
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if ((read_bad ^ mseg.corrected) & mseg.corrected) {
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/* sectors corrected without crc errors set */
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ft_history.crc_failures++;
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}
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TRACE_EXIT size; /* (mseg.blocks - 3) * FT_SECTOR_SIZE; */
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} else {
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ft_history.ecc_failures++;
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TRACE_ABORT(-EAGAIN,
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ft_t_err, "ecc failure on segment %d",
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buff->segment_id);
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}
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TRACE_EXIT 0;
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}
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/* Read given segment into buffer at address.
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*/
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int ftape_read_segment_fraction(const int segment_id,
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void *address,
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const ft_read_mode_t read_mode,
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const int start,
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const int size)
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{
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int result = 0;
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int retry = 0;
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int bytes_read = 0;
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int read_done = 0;
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TRACE_FUN(ft_t_flow);
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ft_history.used |= 1;
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TRACE(ft_t_data_flow, "segment_id = %d", segment_id);
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if (ft_driver_state != reading) {
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TRACE(ft_t_noise, "calling ftape_abort_operation");
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TRACE_CATCH(ftape_abort_operation(),);
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ftape_set_state(reading);
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}
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for(;;) {
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buffer_struct *tail;
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/* Allow escape from this loop on signal !
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*/
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FT_SIGNAL_EXIT(_DONT_BLOCK);
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/* Search all full buffers for the first matching the
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* wanted segment. Clear other buffers on the fly.
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*/
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tail = ftape_get_buffer(ft_queue_tail);
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while (!read_done && tail->status == done) {
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/* Allow escape from this loop on signal !
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*/
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FT_SIGNAL_EXIT(_DONT_BLOCK);
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if (tail->segment_id == segment_id) {
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/* If out buffer is already full,
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* return its contents.
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*/
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TRACE(ft_t_flow, "found segment in cache: %d",
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segment_id);
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if (tail->deleted) {
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/* Return a value that
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* read_header_segment
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* understands. As this
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* should only occur when
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* searching for the header
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* segments it shouldn't be
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* misinterpreted elsewhere.
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*/
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TRACE_EXIT 0;
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}
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result = correct_and_copy_fraction(
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tail,
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address,
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start,
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size);
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TRACE(ft_t_flow, "segment contains (bytes): %d",
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result);
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if (result < 0) {
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if (result != -EAGAIN) {
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TRACE_EXIT result;
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}
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/* keep read_done == 0, will
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* trigger
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* ftape_abort_operation
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* because reading wrong
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* segment.
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*/
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TRACE(ft_t_err, "ecc failed, retry");
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++retry;
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} else {
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read_done = 1;
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bytes_read = result;
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}
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| 228 |
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} else {
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TRACE(ft_t_flow,"zapping segment in cache: %d",
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tail->segment_id);
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}
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tail->status = waiting;
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tail = ftape_next_buffer(ft_queue_tail);
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}
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| 235 |
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if (!read_done && tail->status == reading) {
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if (tail->segment_id == segment_id) {
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switch(ftape_wait_segment(reading)) {
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case 0:
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break;
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| 240 |
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case -EINTR:
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| 241 |
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TRACE_ABORT(-EINTR, ft_t_warn,
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"interrupted by "
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"non-blockable signal");
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| 244 |
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break;
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| 245 |
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default:
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| 246 |
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TRACE(ft_t_noise,
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"wait_segment failed");
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| 248 |
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ftape_abort_operation();
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| 249 |
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ftape_set_state(reading);
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| 250 |
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break;
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| 251 |
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}
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| 252 |
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} else {
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| 253 |
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/* We're reading the wrong segment,
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| 254 |
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* stop runner.
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| 255 |
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*/
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| 256 |
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TRACE(ft_t_noise, "reading wrong segment");
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| 257 |
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ftape_abort_operation();
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| 258 |
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ftape_set_state(reading);
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| 259 |
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}
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| 260 |
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}
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| 261 |
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/* should runner stop ?
|
| 262 |
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*/
|
| 263 |
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if (ft_runner_status == aborting) {
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| 264 |
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buffer_struct *head = ftape_get_buffer(ft_queue_head);
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| 265 |
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switch(head->status) {
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| 266 |
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case error:
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| 267 |
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ft_history.defects +=
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| 268 |
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count_ones(head->hard_error_map);
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| 269 |
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case reading:
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| 270 |
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head->status = waiting;
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| 271 |
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break;
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| 272 |
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default:
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| 273 |
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break;
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| 274 |
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}
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| 275 |
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TRACE_CATCH(ftape_dumb_stop(),);
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| 276 |
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} else {
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| 277 |
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/* If just passed last segment on tape: wait
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| 278 |
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* for BOT or EOT mark. Sets ft_runner_status to
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| 279 |
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* idle if at lEOT and successful
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| 280 |
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*/
|
| 281 |
|
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TRACE_CATCH(ftape_handle_logical_eot(),);
|
| 282 |
|
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}
|
| 283 |
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/* If we got a segment: quit, or else retry up to limit.
|
| 284 |
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*
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| 285 |
|
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* If segment to read is empty, do not start runner for it,
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| 286 |
|
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* but wait for next read call.
|
| 287 |
|
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*/
|
| 288 |
|
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if (read_done ||
|
| 289 |
|
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ftape_get_bad_sector_entry(segment_id) == EMPTY_SEGMENT ) {
|
| 290 |
|
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/* bytes_read = 0; should still be zero */
|
| 291 |
|
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TRACE_EXIT bytes_read;
|
| 292 |
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|
| 293 |
|
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}
|
| 294 |
|
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if (retry > FT_RETRIES_ON_ECC_ERROR) {
|
| 295 |
|
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ft_history.defects++;
|
| 296 |
|
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TRACE_ABORT(-ENODATA, ft_t_err,
|
| 297 |
|
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"too many retries on ecc failure");
|
| 298 |
|
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}
|
| 299 |
|
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/* Now at least one buffer is empty !
|
| 300 |
|
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* Restart runner & tape if needed.
|
| 301 |
|
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*/
|
| 302 |
|
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TRACE(ft_t_any, "head: %d, tail: %d, ft_runner_status: %d",
|
| 303 |
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ftape_buffer_id(ft_queue_head),
|
| 304 |
|
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ftape_buffer_id(ft_queue_tail),
|
| 305 |
|
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ft_runner_status);
|
| 306 |
|
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TRACE(ft_t_any, "buffer[].status, [head]: %d, [tail]: %d",
|
| 307 |
|
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ftape_get_buffer(ft_queue_head)->status,
|
| 308 |
|
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ftape_get_buffer(ft_queue_tail)->status);
|
| 309 |
|
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tail = ftape_get_buffer(ft_queue_tail);
|
| 310 |
|
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if (tail->status == waiting) {
|
| 311 |
|
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buffer_struct *head = ftape_get_buffer(ft_queue_head);
|
| 312 |
|
|
|
| 313 |
|
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ftape_setup_new_segment(head, segment_id, -1);
|
| 314 |
|
|
if (read_mode == FT_RD_SINGLE) {
|
| 315 |
|
|
/* disable read-ahead */
|
| 316 |
|
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head->next_segment = 0;
|
| 317 |
|
|
}
|
| 318 |
|
|
ftape_calc_next_cluster(head);
|
| 319 |
|
|
if (ft_runner_status == idle) {
|
| 320 |
|
|
result = ftape_start_tape(segment_id,
|
| 321 |
|
|
head->sector_offset);
|
| 322 |
|
|
if (result < 0) {
|
| 323 |
|
|
TRACE_ABORT(result, ft_t_err, "Error: "
|
| 324 |
|
|
"segment %d unreachable",
|
| 325 |
|
|
segment_id);
|
| 326 |
|
|
}
|
| 327 |
|
|
}
|
| 328 |
|
|
head->status = reading;
|
| 329 |
|
|
fdc_setup_read_write(head, FDC_READ);
|
| 330 |
|
|
}
|
| 331 |
|
|
}
|
| 332 |
|
|
/* not reached */
|
| 333 |
|
|
TRACE_EXIT -EIO;
|
| 334 |
|
|
}
|
| 335 |
|
|
|
| 336 |
|
|
int ftape_read_header_segment(__u8 *address)
|
| 337 |
|
|
{
|
| 338 |
|
|
int result;
|
| 339 |
|
|
int header_segment;
|
| 340 |
|
|
int first_failed = 0;
|
| 341 |
|
|
int status;
|
| 342 |
|
|
TRACE_FUN(ft_t_flow);
|
| 343 |
|
|
|
| 344 |
|
|
ft_used_header_segment = -1;
|
| 345 |
|
|
TRACE_CATCH(ftape_report_drive_status(&status),);
|
| 346 |
|
|
TRACE(ft_t_flow, "reading...");
|
| 347 |
|
|
/* We're looking for the first header segment.
|
| 348 |
|
|
* A header segment cannot contain bad sectors, therefor at the
|
| 349 |
|
|
* tape start, segments with bad sectors are (according to QIC-40/80)
|
| 350 |
|
|
* written with deleted data marks and must be skipped.
|
| 351 |
|
|
*/
|
| 352 |
|
|
memset(address, '\0', (FT_SECTORS_PER_SEGMENT - 3) * FT_SECTOR_SIZE);
|
| 353 |
|
|
result = 0;
|
| 354 |
|
|
#define HEADER_SEGMENT_BOUNDARY 68 /* why not 42? */
|
| 355 |
|
|
for (header_segment = 0;
|
| 356 |
|
|
header_segment < HEADER_SEGMENT_BOUNDARY && result == 0;
|
| 357 |
|
|
++header_segment) {
|
| 358 |
|
|
/* Set no read-ahead, the isr will force read-ahead whenever
|
| 359 |
|
|
* it encounters deleted data !
|
| 360 |
|
|
*/
|
| 361 |
|
|
result = ftape_read_segment(header_segment,
|
| 362 |
|
|
address,
|
| 363 |
|
|
FT_RD_SINGLE);
|
| 364 |
|
|
if (result < 0 && !first_failed) {
|
| 365 |
|
|
TRACE(ft_t_err, "header segment damaged, trying backup");
|
| 366 |
|
|
first_failed = 1;
|
| 367 |
|
|
result = 0; /* force read of next (backup) segment */
|
| 368 |
|
|
}
|
| 369 |
|
|
}
|
| 370 |
|
|
if (result < 0 || header_segment >= HEADER_SEGMENT_BOUNDARY) {
|
| 371 |
|
|
TRACE_ABORT(-EIO, ft_t_err,
|
| 372 |
|
|
"no readable header segment found");
|
| 373 |
|
|
}
|
| 374 |
|
|
TRACE_CATCH(ftape_abort_operation(),);
|
| 375 |
|
|
ft_used_header_segment = header_segment;
|
| 376 |
|
|
result = ftape_decode_header_segment(address);
|
| 377 |
|
|
TRACE_EXIT result;
|
| 378 |
|
|
}
|
| 379 |
|
|
|
| 380 |
|
|
int ftape_decode_header_segment(__u8 *address)
|
| 381 |
|
|
{
|
| 382 |
|
|
unsigned int max_floppy_side;
|
| 383 |
|
|
unsigned int max_floppy_track;
|
| 384 |
|
|
unsigned int max_floppy_sector;
|
| 385 |
|
|
unsigned int new_tape_len;
|
| 386 |
|
|
TRACE_FUN(ft_t_flow);
|
| 387 |
|
|
|
| 388 |
|
|
if (GET4(address, FT_SIGNATURE) == FT_D2G_MAGIC) {
|
| 389 |
|
|
/* Ditto 2GB header segment. They encrypt the bad sector map.
|
| 390 |
|
|
* We decrypt it and store them in normal format.
|
| 391 |
|
|
* I hope this is correct.
|
| 392 |
|
|
*/
|
| 393 |
|
|
int i;
|
| 394 |
|
|
TRACE(ft_t_warn,
|
| 395 |
|
|
"Found Ditto 2GB tape, "
|
| 396 |
|
|
"trying to decrypt bad sector map");
|
| 397 |
|
|
for (i=256; i < 29 * FT_SECTOR_SIZE; i++) {
|
| 398 |
|
|
address[i] = ~(address[i] - (i&0xff));
|
| 399 |
|
|
}
|
| 400 |
|
|
PUT4(address, 0,FT_HSEG_MAGIC);
|
| 401 |
|
|
} else if (GET4(address, FT_SIGNATURE) != FT_HSEG_MAGIC) {
|
| 402 |
|
|
TRACE_ABORT(-EIO, ft_t_err,
|
| 403 |
|
|
"wrong signature in header segment");
|
| 404 |
|
|
}
|
| 405 |
|
|
ft_format_code = (ft_format_type) address[FT_FMT_CODE];
|
| 406 |
|
|
if (ft_format_code != fmt_big) {
|
| 407 |
|
|
ft_header_segment_1 = GET2(address, FT_HSEG_1);
|
| 408 |
|
|
ft_header_segment_2 = GET2(address, FT_HSEG_2);
|
| 409 |
|
|
ft_first_data_segment = GET2(address, FT_FRST_SEG);
|
| 410 |
|
|
ft_last_data_segment = GET2(address, FT_LAST_SEG);
|
| 411 |
|
|
} else {
|
| 412 |
|
|
ft_header_segment_1 = GET4(address, FT_6_HSEG_1);
|
| 413 |
|
|
ft_header_segment_2 = GET4(address, FT_6_HSEG_2);
|
| 414 |
|
|
ft_first_data_segment = GET4(address, FT_6_FRST_SEG);
|
| 415 |
|
|
ft_last_data_segment = GET4(address, FT_6_LAST_SEG);
|
| 416 |
|
|
}
|
| 417 |
|
|
TRACE(ft_t_noise, "first data segment: %d", ft_first_data_segment);
|
| 418 |
|
|
TRACE(ft_t_noise, "last data segment: %d", ft_last_data_segment);
|
| 419 |
|
|
TRACE(ft_t_noise, "header segments are %d and %d",
|
| 420 |
|
|
ft_header_segment_1, ft_header_segment_2);
|
| 421 |
|
|
|
| 422 |
|
|
/* Verify tape parameters...
|
| 423 |
|
|
* QIC-40/80 spec: tape_parameters:
|
| 424 |
|
|
*
|
| 425 |
|
|
* segments-per-track segments_per_track
|
| 426 |
|
|
* tracks-per-cartridge tracks_per_tape
|
| 427 |
|
|
* max-floppy-side (segments_per_track *
|
| 428 |
|
|
* tracks_per_tape - 1) /
|
| 429 |
|
|
* ftape_segments_per_head
|
| 430 |
|
|
* max-floppy-track ftape_segments_per_head /
|
| 431 |
|
|
* ftape_segments_per_cylinder - 1
|
| 432 |
|
|
* max-floppy-sector ftape_segments_per_cylinder *
|
| 433 |
|
|
* FT_SECTORS_PER_SEGMENT
|
| 434 |
|
|
*/
|
| 435 |
|
|
ft_segments_per_track = GET2(address, FT_SPT);
|
| 436 |
|
|
ft_tracks_per_tape = address[FT_TPC];
|
| 437 |
|
|
max_floppy_side = address[FT_FHM];
|
| 438 |
|
|
max_floppy_track = address[FT_FTM];
|
| 439 |
|
|
max_floppy_sector = address[FT_FSM];
|
| 440 |
|
|
TRACE(ft_t_noise, "(fmt/spt/tpc/fhm/ftm/fsm) = %d/%d/%d/%d/%d/%d",
|
| 441 |
|
|
ft_format_code, ft_segments_per_track, ft_tracks_per_tape,
|
| 442 |
|
|
max_floppy_side, max_floppy_track, max_floppy_sector);
|
| 443 |
|
|
new_tape_len = ftape_tape_len;
|
| 444 |
|
|
switch (ft_format_code) {
|
| 445 |
|
|
case fmt_425ft:
|
| 446 |
|
|
new_tape_len = 425;
|
| 447 |
|
|
break;
|
| 448 |
|
|
case fmt_normal:
|
| 449 |
|
|
if (ftape_tape_len == 0) { /* otherwise 307 ft */
|
| 450 |
|
|
new_tape_len = 205;
|
| 451 |
|
|
}
|
| 452 |
|
|
break;
|
| 453 |
|
|
case fmt_1100ft:
|
| 454 |
|
|
new_tape_len = 1100;
|
| 455 |
|
|
break;
|
| 456 |
|
|
case fmt_var:{
|
| 457 |
|
|
int segments_per_1000_inch = 1; /* non-zero default for switch */
|
| 458 |
|
|
switch (ft_qic_std) {
|
| 459 |
|
|
case QIC_TAPE_QIC40:
|
| 460 |
|
|
segments_per_1000_inch = 332;
|
| 461 |
|
|
break;
|
| 462 |
|
|
case QIC_TAPE_QIC80:
|
| 463 |
|
|
segments_per_1000_inch = 488;
|
| 464 |
|
|
break;
|
| 465 |
|
|
case QIC_TAPE_QIC3010:
|
| 466 |
|
|
segments_per_1000_inch = 730;
|
| 467 |
|
|
break;
|
| 468 |
|
|
case QIC_TAPE_QIC3020:
|
| 469 |
|
|
segments_per_1000_inch = 1430;
|
| 470 |
|
|
break;
|
| 471 |
|
|
}
|
| 472 |
|
|
new_tape_len = (1000 * ft_segments_per_track +
|
| 473 |
|
|
(segments_per_1000_inch - 1)) / segments_per_1000_inch;
|
| 474 |
|
|
break;
|
| 475 |
|
|
}
|
| 476 |
|
|
case fmt_big:{
|
| 477 |
|
|
int segments_per_1000_inch = 1; /* non-zero default for switch */
|
| 478 |
|
|
switch (ft_qic_std) {
|
| 479 |
|
|
case QIC_TAPE_QIC40:
|
| 480 |
|
|
segments_per_1000_inch = 332;
|
| 481 |
|
|
break;
|
| 482 |
|
|
case QIC_TAPE_QIC80:
|
| 483 |
|
|
segments_per_1000_inch = 488;
|
| 484 |
|
|
break;
|
| 485 |
|
|
case QIC_TAPE_QIC3010:
|
| 486 |
|
|
segments_per_1000_inch = 730;
|
| 487 |
|
|
break;
|
| 488 |
|
|
case QIC_TAPE_QIC3020:
|
| 489 |
|
|
segments_per_1000_inch = 1430;
|
| 490 |
|
|
break;
|
| 491 |
|
|
default:
|
| 492 |
|
|
TRACE_ABORT(-EIO, ft_t_bug,
|
| 493 |
|
|
"%x QIC-standard with fmt-code %d, please report",
|
| 494 |
|
|
ft_qic_std, ft_format_code);
|
| 495 |
|
|
}
|
| 496 |
|
|
new_tape_len = ((1000 * ft_segments_per_track +
|
| 497 |
|
|
(segments_per_1000_inch - 1)) /
|
| 498 |
|
|
segments_per_1000_inch);
|
| 499 |
|
|
break;
|
| 500 |
|
|
}
|
| 501 |
|
|
default:
|
| 502 |
|
|
TRACE_ABORT(-EIO, ft_t_err,
|
| 503 |
|
|
"unknown tape format, please report !");
|
| 504 |
|
|
}
|
| 505 |
|
|
if (new_tape_len != ftape_tape_len) {
|
| 506 |
|
|
ftape_tape_len = new_tape_len;
|
| 507 |
|
|
TRACE(ft_t_info, "calculated tape length is %d ft",
|
| 508 |
|
|
ftape_tape_len);
|
| 509 |
|
|
ftape_calc_timeouts(ft_qic_std, ft_data_rate, ftape_tape_len);
|
| 510 |
|
|
}
|
| 511 |
|
|
if (ft_segments_per_track == 0 && ft_tracks_per_tape == 0 &&
|
| 512 |
|
|
max_floppy_side == 0 && max_floppy_track == 0 &&
|
| 513 |
|
|
max_floppy_sector == 0) {
|
| 514 |
|
|
/* QIC-40 Rev E and earlier has no values in the header.
|
| 515 |
|
|
*/
|
| 516 |
|
|
ft_segments_per_track = 68;
|
| 517 |
|
|
ft_tracks_per_tape = 20;
|
| 518 |
|
|
max_floppy_side = 1;
|
| 519 |
|
|
max_floppy_track = 169;
|
| 520 |
|
|
max_floppy_sector = 128;
|
| 521 |
|
|
}
|
| 522 |
|
|
/* This test will compensate for the wrong parameter on tapes
|
| 523 |
|
|
* formatted by Conner software.
|
| 524 |
|
|
*/
|
| 525 |
|
|
if (ft_segments_per_track == 150 &&
|
| 526 |
|
|
ft_tracks_per_tape == 28 &&
|
| 527 |
|
|
max_floppy_side == 7 &&
|
| 528 |
|
|
max_floppy_track == 149 &&
|
| 529 |
|
|
max_floppy_sector == 128) {
|
| 530 |
|
|
TRACE(ft_t_info, "the famous CONNER bug: max_floppy_side off by one !");
|
| 531 |
|
|
max_floppy_side = 6;
|
| 532 |
|
|
}
|
| 533 |
|
|
/* These tests will compensate for the wrong parameter on tapes
|
| 534 |
|
|
* formatted by ComByte Windows software.
|
| 535 |
|
|
*
|
| 536 |
|
|
* First, for 205 foot tapes
|
| 537 |
|
|
*/
|
| 538 |
|
|
if (ft_segments_per_track == 100 &&
|
| 539 |
|
|
ft_tracks_per_tape == 28 &&
|
| 540 |
|
|
max_floppy_side == 9 &&
|
| 541 |
|
|
max_floppy_track == 149 &&
|
| 542 |
|
|
max_floppy_sector == 128) {
|
| 543 |
|
|
TRACE(ft_t_info, "the ComByte bug: max_floppy_side incorrect!");
|
| 544 |
|
|
max_floppy_side = 4;
|
| 545 |
|
|
}
|
| 546 |
|
|
/* Next, for 307 foot tapes. */
|
| 547 |
|
|
if (ft_segments_per_track == 150 &&
|
| 548 |
|
|
ft_tracks_per_tape == 28 &&
|
| 549 |
|
|
max_floppy_side == 9 &&
|
| 550 |
|
|
max_floppy_track == 149 &&
|
| 551 |
|
|
max_floppy_sector == 128) {
|
| 552 |
|
|
TRACE(ft_t_info, "the ComByte bug: max_floppy_side incorrect!");
|
| 553 |
|
|
max_floppy_side = 6;
|
| 554 |
|
|
}
|
| 555 |
|
|
/* This test will compensate for the wrong parameter on tapes
|
| 556 |
|
|
* formatted by Colorado Windows software.
|
| 557 |
|
|
*/
|
| 558 |
|
|
if (ft_segments_per_track == 150 &&
|
| 559 |
|
|
ft_tracks_per_tape == 28 &&
|
| 560 |
|
|
max_floppy_side == 6 &&
|
| 561 |
|
|
max_floppy_track == 150 &&
|
| 562 |
|
|
max_floppy_sector == 128) {
|
| 563 |
|
|
TRACE(ft_t_info, "the famous Colorado bug: max_floppy_track off by one !");
|
| 564 |
|
|
max_floppy_track = 149;
|
| 565 |
|
|
}
|
| 566 |
|
|
ftape_segments_per_head = ((max_floppy_sector/FT_SECTORS_PER_SEGMENT) *
|
| 567 |
|
|
(max_floppy_track + 1));
|
| 568 |
|
|
/* This test will compensate for some bug reported by Dima
|
| 569 |
|
|
* Brodsky. Seems to be a Colorado bug, either. (freebee
|
| 570 |
|
|
* Imation tape shipped together with Colorado T3000
|
| 571 |
|
|
*/
|
| 572 |
|
|
if ((ft_format_code == fmt_var || ft_format_code == fmt_big) &&
|
| 573 |
|
|
ft_tracks_per_tape == 50 &&
|
| 574 |
|
|
max_floppy_side == 54 &&
|
| 575 |
|
|
max_floppy_track == 255 &&
|
| 576 |
|
|
max_floppy_sector == 128) {
|
| 577 |
|
|
TRACE(ft_t_info, "the famous ??? bug: max_floppy_track off by one !");
|
| 578 |
|
|
max_floppy_track = 254;
|
| 579 |
|
|
}
|
| 580 |
|
|
/*
|
| 581 |
|
|
* Verify drive_configuration with tape parameters
|
| 582 |
|
|
*/
|
| 583 |
|
|
if (ftape_segments_per_head == 0 || ftape_segments_per_cylinder == 0 ||
|
| 584 |
|
|
((ft_segments_per_track * ft_tracks_per_tape - 1) / ftape_segments_per_head
|
| 585 |
|
|
!= max_floppy_side) ||
|
| 586 |
|
|
(ftape_segments_per_head / ftape_segments_per_cylinder - 1 != max_floppy_track) ||
|
| 587 |
|
|
(ftape_segments_per_cylinder * FT_SECTORS_PER_SEGMENT != max_floppy_sector)
|
| 588 |
|
|
#ifdef TESTING
|
| 589 |
|
|
|| ((ft_format_code == fmt_var || ft_format_code == fmt_big) &&
|
| 590 |
|
|
(max_floppy_track != 254 || max_floppy_sector != 128))
|
| 591 |
|
|
#endif
|
| 592 |
|
|
) {
|
| 593 |
|
|
TRACE(ft_t_err,"Tape parameters inconsistency, please report");
|
| 594 |
|
|
TRACE(ft_t_err, "reported = %d/%d/%d/%d/%d/%d",
|
| 595 |
|
|
ft_format_code,
|
| 596 |
|
|
ft_segments_per_track,
|
| 597 |
|
|
ft_tracks_per_tape,
|
| 598 |
|
|
max_floppy_side,
|
| 599 |
|
|
max_floppy_track,
|
| 600 |
|
|
max_floppy_sector);
|
| 601 |
|
|
TRACE(ft_t_err, "required = %d/%d/%d/%d/%d/%d",
|
| 602 |
|
|
ft_format_code,
|
| 603 |
|
|
ft_segments_per_track,
|
| 604 |
|
|
ft_tracks_per_tape,
|
| 605 |
|
|
((ft_segments_per_track * ft_tracks_per_tape -1) /
|
| 606 |
|
|
ftape_segments_per_head ),
|
| 607 |
|
|
(ftape_segments_per_head /
|
| 608 |
|
|
ftape_segments_per_cylinder - 1 ),
|
| 609 |
|
|
(ftape_segments_per_cylinder * FT_SECTORS_PER_SEGMENT));
|
| 610 |
|
|
TRACE_EXIT -EIO;
|
| 611 |
|
|
}
|
| 612 |
|
|
ftape_extract_bad_sector_map(address);
|
| 613 |
|
|
TRACE_EXIT 0;
|
| 614 |
|
|
}
|
