34  * 28.02.92 - made track-buffering routines, based on the routines written
309 #define TRACK			2  macro
428 	     |  Sectors per track
521  * Track buffer
586 static unsigned char fsector_t;	/* sector in track */
844 		    (mode || drive_state[drive].track != NEED_1_RECAL))  in reset_fdc_info()
845 			drive_state[drive].track = NEED_2_RECAL;  in reset_fdc_info()
1253 	output_byte(fdc, 0);    /* pre-compensation from track 0 upwards */  in fdc_configure()
1383 	pr_cont(": track %d, head %d, sector %d, size %d",  in tell_sector()
1461 			drive_state[current_drive].track = NEED_2_RECAL;  in interpret_errors()
1479  * selected, and the head is sitting on the right track).
1545 		drive_state[current_drive].track = NEED_2_RECAL;  in seek_interrupt()
1550 	if (drive_state[current_drive].track >= 0 &&  in seek_interrupt()
1551 	    drive_state[current_drive].track != reply_buffer[ST1] &&  in seek_interrupt()
1562 	drive_state[current_drive].track = reply_buffer[ST1];  in seek_interrupt()
1594 	int track;  in seek_floppy()  local
1613 	if (drive_state[current_drive].track <= NEED_1_RECAL) {  in seek_floppy()
1618 …(drive_state[current_drive].track <= NO_TRACK || drive_state[current_drive].track == raw_cmd->trac…  in seek_floppy()
1621 		if (raw_cmd->track)  in seek_floppy()
1622 			track = raw_cmd->track - 1;  in seek_floppy()
1629 			track = 1;  in seek_floppy()
1633 		if (raw_cmd->track != drive_state[current_drive].track &&  in seek_floppy()
1635 			track = raw_cmd->track;  in seek_floppy()
1645 	if (output_byte(current_fdc, track) < 0) {  in seek_floppy()
1658 		switch (drive_state[current_drive].track) {  in recal_interrupt()
1662 			 * reached track 0. Probably no drive. Raise an  in recal_interrupt()
1671 			 * and we are not at track 0, this  in recal_interrupt()
1674 			 * be already at track 0.) Clear the  in recal_interrupt()
1688 			 * track 0, this might mean that we  in recal_interrupt()
1689 			 * started beyond track 80.  Try  in recal_interrupt()
1691 			drive_state[current_drive].track = NEED_1_RECAL;  in recal_interrupt()
1695 		drive_state[current_drive].track = reply_buffer[ST1];  in recal_interrupt()
2103 		drive_state[current_drive].track = NEED_2_RECAL;  in bad_flp_intr()
2137 static void setup_format_params(int track)  in setup_format_params()  argument
2145 		unsigned char track, head, sect, size;  in setup_format_params()  member
2149 	raw_cmd->track = track;  in setup_format_params()
2168 	/* allow for about 30ms for data transport per track */  in setup_format_params()
2174 	/* position of logical sector 1 on this track */  in setup_format_params()
2175 	n = (track_shift * format_req.track + head_shift * format_req.head)  in setup_format_params()
2185 		here[count].track = format_req.track;  in setup_format_params()
2212 	setup_format_params(format_req.track << STRETCH(_floppy));  in redo_format()
2233 	    _floppy->track > drive_params[current_drive].tracks ||  in do_format()
2234 	    tmp_format_req->track >= _floppy->track ||  in do_format()
2344 	nr_sectors = (((reply_buffer[R_TRACK] - raw_cmd->cmd[TRACK]) * heads +  in rw_interrupt()
2357 			raw_cmd->cmd[TRACK]);  in rw_interrupt()
2402 		buffer_track = raw_cmd->track;  in rw_interrupt()
2424  * Move data from/to the track buffer to/from the buffer cache.
2512 		raw_cmd->cmd[COMMAND] &= ~0x80;	/* switch off multiple track mode */  in virtualdmabug_workaround()
2531  * track, or a single sector)
2532  * All floppy_track_buffer handling goes in here. If we ever add track buffer
2566 	raw_cmd->cmd[TRACK] = (int)blk_rq_pos(current_req) / max_sector;  in make_raw_rw_request()
2568 	if (_floppy->track && raw_cmd->cmd[TRACK] >= _floppy->track) {  in make_raw_rw_request()
2582 	/* 2M disks have phantom sectors on the first track */  in make_raw_rw_request()
2583 	if ((_floppy->rate & FD_2M) && (!raw_cmd->cmd[TRACK]) && (!raw_cmd->cmd[HEAD])) {  in make_raw_rw_request()
2596 	    (raw_cmd->cmd[TRACK] || raw_cmd->cmd[HEAD]) && raw_cmd->rate == 2)  in make_raw_rw_request()
2603 	raw_cmd->track = raw_cmd->cmd[TRACK] << STRETCH(_floppy);  in make_raw_rw_request()
2631 	} else if (!raw_cmd->cmd[TRACK] && !raw_cmd->cmd[HEAD] && !(_floppy->rate & FD_2M) && probing) {  in make_raw_rw_request()
2641 	if ((raw_cmd->track == buffer_track) &&  in make_raw_rw_request()
2644 		/* data already in track buffer */  in make_raw_rw_request()
2667 	/* claim buffer track if needed */  in make_raw_rw_request()
2668 	if (buffer_track != raw_cmd->track ||	/* bad track */  in make_raw_rw_request()
2685 		/* copy write buffer to track buffer.  in make_raw_rw_request()
2691 		buffer_track = raw_cmd->track;  in make_raw_rw_request()
2719 		pr_info("command=%x SECTOR=%d HEAD=%d, TRACK=%d\n",  in make_raw_rw_request()
2721 			raw_cmd->cmd[HEAD], raw_cmd->cmd[TRACK]);  in make_raw_rw_request()
2723 		pr_info("buffer track=%d\n", buffer_track);  in make_raw_rw_request()
2894 	raw_cmd->track = 0;  in poll_drive()
3170 	drive_state[current_drive].track = NO_TRACK;  in raw_cmd_ioctl()
3210 	/* invalidate the buffer track to force a reread */  in invalidate_drive()
3232 	    g->track <= 0 || g->track > drive_params[drive].tracks >> STRETCH(g) ||  in set_geometry()
3372 	geo->cylinders = g->track;  in fd_getgeo()
3609 	short		track;  member
3634 	unsigned char	track[4];  member
3792 	v.track = drive_state[drive].track;  in compat_getdrvstat()
3835 	memcpy(v32.track, v.track, 4);  in compat_getfdcstat()
4675 			fdc_state[i].track[unit] = 0;  in do_floppy_init()