34  * 28.02.92 - made track-buffering routines, based on the routines written
313 #define TRACK			2  macro
432 	     |  Sectors per track
525  * Track buffer
590 static unsigned char fsector_t;	/* sector in track */
848 		    (mode || drive_state[drive].track != NEED_1_RECAL))  in reset_fdc_info()
849 			drive_state[drive].track = NEED_2_RECAL;  in reset_fdc_info()
1257 	output_byte(fdc, 0);    /* pre-compensation from track 0 upwards */  in fdc_configure()
1387 	pr_cont(": track %d, head %d, sector %d, size %d",  in tell_sector()
1465 			drive_state[current_drive].track = NEED_2_RECAL;  in interpret_errors()
1483  * selected, and the head is sitting on the right track).
1549 		drive_state[current_drive].track = NEED_2_RECAL;  in seek_interrupt()
1554 	if (drive_state[current_drive].track >= 0 &&  in seek_interrupt()
1555 	    drive_state[current_drive].track != reply_buffer[ST1] &&  in seek_interrupt()
1566 	drive_state[current_drive].track = reply_buffer[ST1];  in seek_interrupt()
1598 	int track;  in seek_floppy()  local
1617 	if (drive_state[current_drive].track <= NEED_1_RECAL) {  in seek_floppy()
1622 …(drive_state[current_drive].track <= NO_TRACK || drive_state[current_drive].track == raw_cmd->trac…  in seek_floppy()
1625 		if (raw_cmd->track)  in seek_floppy()
1626 			track = raw_cmd->track - 1;  in seek_floppy()
1633 			track = 1;  in seek_floppy()
1637 		if (raw_cmd->track != drive_state[current_drive].track &&  in seek_floppy()
1639 			track = raw_cmd->track;  in seek_floppy()
1649 	if (output_byte(current_fdc, track) < 0) {  in seek_floppy()
1662 		switch (drive_state[current_drive].track) {  in recal_interrupt()
1666 			 * reached track 0. Probably no drive. Raise an  in recal_interrupt()
1675 			 * and we are not at track 0, this  in recal_interrupt()
1678 			 * be already at track 0.) Clear the  in recal_interrupt()
1692 			 * track 0, this might mean that we  in recal_interrupt()
1693 			 * started beyond track 80.  Try  in recal_interrupt()
1695 			drive_state[current_drive].track = NEED_1_RECAL;  in recal_interrupt()
1699 		drive_state[current_drive].track = reply_buffer[ST1];  in recal_interrupt()
2107 		drive_state[current_drive].track = NEED_2_RECAL;  in bad_flp_intr()
2141 static void setup_format_params(int track)  in setup_format_params()  argument
2149 		unsigned char track, head, sect, size;  in setup_format_params()  member
2153 	raw_cmd->track = track;  in setup_format_params()
2172 	/* allow for about 30ms for data transport per track */  in setup_format_params()
2178 	/* position of logical sector 1 on this track */  in setup_format_params()
2179 	n = (track_shift * format_req.track + head_shift * format_req.head)  in setup_format_params()
2189 		here[count].track = format_req.track;  in setup_format_params()
2216 	setup_format_params(format_req.track << STRETCH(_floppy));  in redo_format()
2237 	    _floppy->track > drive_params[current_drive].tracks ||  in do_format()
2238 	    tmp_format_req->track >= _floppy->track ||  in do_format()
2348 	nr_sectors = (((reply_buffer[R_TRACK] - raw_cmd->cmd[TRACK]) * heads +  in rw_interrupt()
2361 			raw_cmd->cmd[TRACK]);  in rw_interrupt()
2406 		buffer_track = raw_cmd->track;  in rw_interrupt()
2428  * Move data from/to the track buffer to/from the buffer cache.
2516 		raw_cmd->cmd[COMMAND] &= ~0x80;	/* switch off multiple track mode */  in virtualdmabug_workaround()
2535  * track, or a single sector)
2536  * All floppy_track_buffer handling goes in here. If we ever add track buffer
2570 	raw_cmd->cmd[TRACK] = (int)blk_rq_pos(current_req) / max_sector;  in make_raw_rw_request()
2572 	if (_floppy->track && raw_cmd->cmd[TRACK] >= _floppy->track) {  in make_raw_rw_request()
2586 	/* 2M disks have phantom sectors on the first track */  in make_raw_rw_request()
2587 	if ((_floppy->rate & FD_2M) && (!raw_cmd->cmd[TRACK]) && (!raw_cmd->cmd[HEAD])) {  in make_raw_rw_request()
2600 	    (raw_cmd->cmd[TRACK] || raw_cmd->cmd[HEAD]) && raw_cmd->rate == 2)  in make_raw_rw_request()
2607 	raw_cmd->track = raw_cmd->cmd[TRACK] << STRETCH(_floppy);  in make_raw_rw_request()
2635 	} else if (!raw_cmd->cmd[TRACK] && !raw_cmd->cmd[HEAD] && !(_floppy->rate & FD_2M) && probing) {  in make_raw_rw_request()
2645 	if ((raw_cmd->track == buffer_track) &&  in make_raw_rw_request()
2648 		/* data already in track buffer */  in make_raw_rw_request()
2671 	/* claim buffer track if needed */  in make_raw_rw_request()
2672 	if (buffer_track != raw_cmd->track ||	/* bad track */  in make_raw_rw_request()
2689 		/* copy write buffer to track buffer.  in make_raw_rw_request()
2695 		buffer_track = raw_cmd->track;  in make_raw_rw_request()
2723 		pr_info("command=%x SECTOR=%d HEAD=%d, TRACK=%d\n",  in make_raw_rw_request()
2725 			raw_cmd->cmd[HEAD], raw_cmd->cmd[TRACK]);  in make_raw_rw_request()
2727 		pr_info("buffer track=%d\n", buffer_track);  in make_raw_rw_request()
2898 	raw_cmd->track = 0;  in poll_drive()
3177 	drive_state[current_drive].track = NO_TRACK;  in raw_cmd_ioctl()
3217 	/* invalidate the buffer track to force a reread */  in invalidate_drive()
3239 	    g->track <= 0 || g->track > drive_params[drive].tracks >> STRETCH(g) ||  in set_geometry()
3379 	geo->cylinders = g->track;  in fd_getgeo()
3616 	short		track;  member
3641 	unsigned char	track[4];  member
3799 	v.track = drive_state[drive].track;  in compat_getdrvstat()
3842 	memcpy(v32.track, v.track, 4);  in compat_getfdcstat()
4683 			fdc_state[i].track[unit] = 0;  in do_floppy_init()