static SectorMap convert_sector_map(buffer_struct * buff)
{
int i = 0;
SectorMap bad_map = ftape_get_bad_sector_entry(buff->segment_id);
SectorMap src_map = buff->soft_error_map | buff->hard_error_map;
SectorMap dst_map = 0;
TRACE_FUN(ft_t_any);
if (bad_map || src_map) {
TRACE(ft_t_flow, "bad_map = 0x%08lx", (long) bad_map);
TRACE(ft_t_flow, "src_map = 0x%08lx", (long) src_map);
}
while (bad_map) {
while ((bad_map & 1) == 0) {
if (src_map & 1) {
dst_map |= (1 << i);
}
src_map >>= 1;
bad_map >>= 1;
++i;
}
/* (bad_map & 1) == 1 */
src_map >>= 1;
bad_map >>= 1;
}
if (src_map) {
dst_map |= (src_map << i);
}
if (dst_map) {
TRACE(ft_t_flow, "dst_map = 0x%08lx", (long) dst_map);
}
TRACE_EXIT dst_map;
}
/* Calculate Floppy Disk Controller and DMA parameters for a segment.
* head: selects buffer struct in array.
* offset: number of physical sectors to skip (including bad ones).
* count: number of physical sectors to handle (including bad ones).
*/
static int setup_segment(buffer_struct * buff,
int segment_id,
unsigned int sector_offset,
unsigned int sector_count,
int retry)
{
SectorMap offset_mask;
SectorMap mask;
TRACE_FUN(ft_t_any);
buff->segment_id = segment_id;
buff->sector_offset = sector_offset;
buff->remaining = sector_count;
buff->head = segment_id / ftape_segments_per_head;
buff->cyl = (segment_id % ftape_segments_per_head) / ftape_segments_per_cylinder;
buff->sect = (segment_id % ftape_segments_per_cylinder) * FT_SECTORS_PER_SEGMENT + 1;
buff->deleted = 0;
offset_mask = (1 << buff->sector_offset) - 1;
mask = ftape_get_bad_sector_entry(segment_id) & offset_mask;
while (mask) {
if (mask & 1) {
offset_mask >>= 1; /* don't count bad sector */
}
mask >>= 1;
}
unsigned int zft_get_seg_sz(unsigned int segment)
{
int size;
TRACE_FUN(ft_t_any);
size = FT_SEGMENT_SIZE -
count_ones(ftape_get_bad_sector_entry(segment))*FT_SECTOR_SIZE;
if (size > 0) {
TRACE_EXIT (unsigned)size;
} else {
TRACE_EXIT 0;
}
}
