/*
 *  sbpcd.c   CD-ROM device driver for the whole family of traditional,
 *            non-ATAPI IDE-style Matsushita/Panasonic CR-5xx drives.
 *            Works with SoundBlaster compatible cards and with "no-sound"
 *            interface cards like Lasermate, Panasonic CI-101P, Teac, ...
 *            Also for the Longshine LCS-7260 drive.
 *            Also for the IBM "External ISA CD-Rom" drive.
 *            Also for the CreativeLabs CD200 drive.
 *            Also for the TEAC CD-55A drive.
 *            Also for the ECS-AT "Vertos 100" drive.
 *            Not for Sanyo drives (but for the H94A, sjcd is there...).
 *            Not for any other Funai drives than the CD200 types (sometimes
 *             labelled E2550UA or MK4015 or 2800F).
 */

#define VERSION "v4.63 Andrew J. Kroll <ag784@freenet.buffalo.edu> Wed Jul 26 04:24:10 EDT 2000"

/*   Copyright (C) 1993, 1994, 1995  Eberhard Moenkeberg <emoenke@gwdg.de>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2, or (at your option)
 *   any later version.
 *
 *   You should have received a copy of the GNU General Public License
 *   (for example /usr/src/linux/COPYING); if not, write to the Free
 *   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *   If you change this software, you should mail a .diff file with some
 *   description lines to emoenke@gwdg.de. I want to know about it.
 *
 *   If you are the editor of a Linux CD, you should enable sbpcd.c within
 *   your boot floppy kernel and send me one of your CDs for free.
 *
 *   If you would like to port the driver to an other operating system (f.e.
 *   FreeBSD or NetBSD) or use it as an information source, you shall not be
 *   restricted by the GPL under the following conditions:
 *     a) the source code of your work is freely available
 *     b) my part of the work gets mentioned at all places where your 
 *        authorship gets mentioned
 *     c) I receive a copy of your code together with a full installation
 *        package of your operating system for free.
 *
 *
 *  VERSION HISTORY
 *
 *  0.1  initial release, April/May 93, after mcd.c (Martin Harriss)
 *
 *  0.2  thek "repeat:"-loop in do_sbpcd_request did not check for
 *       end-of-request_queue (resulting in kernel panic).
 *       Flow control seems stable, but throughput is not better.  
 *
 *  0.3  interrupt locking totally eliminated (maybe "inb" and "outb"
 *       are still locking) - 0.2 made keyboard-type-ahead losses.
 *       check_sbpcd_media_change added (to use by isofs/inode.c)
 *       - but it detects almost nothing.
 *
 *  0.4  use MAJOR 25 definitely.
 *       Almost total re-design to support double-speed drives and
 *       "naked" (no sound) interface cards ("LaserMate" interface type).
 *       Flow control should be exact now.
 *       Don't occupy the SbPro IRQ line (not needed either); will
 *       live together with Hannu Savolainen's sndkit now.
 *       Speeded up data transfer to 150 kB/sec, with help from Kai
 *       Makisara, the "provider" of the "mt" tape utility.
 *       Give "SpinUp" command if necessary.
 *       First steps to support up to 4 drives (but currently only one).
 *       Implemented audio capabilities - workman should work, xcdplayer
 *       gives some problems.
 *       This version is still consuming too much CPU time, and
 *       sleeping still has to be worked on.
 *       During "long" implied seeks, it seems possible that a 
 *       ReadStatus command gets ignored. That gives the message
 *       "ResponseStatus timed out" (happens about 6 times here during
 *       a "ls -alR" of the YGGDRASIL LGX-Beta CD). Such a case is
 *       handled without data error, but it should get done better.
 *
 *  0.5  Free CPU during waits (again with help from Kai Makisara).
 *       Made it work together with the LILO/kernel setup standard.
 *       Included auto-probing code, as suggested by YGGDRASIL.
 *       Formal redesign to add DDI debugging.
 *       There are still flaws in IOCTL (workman with double speed drive).
 *
 *  1.0  Added support for all drive IDs (0...3, no longer only 0)
 *       and up to 4 drives on one controller.
 *       Added "#define MANY_SESSION" for "old" multi session CDs.
 *
 *  1.1  Do SpinUp for new drives, too.
 *       Revised for clean compile under "old" kernels (0.99pl9).
 *
 *  1.2  Found the "workman with double-speed drive" bug: use the driver's
 *       audio_state, not what the drive is reporting with ReadSubQ.
 *
 *  1.3  Minor cleanups.
 *       Refinements regarding Workman.
 *
 *  1.4  Read XA disks (PhotoCDs) with "old" drives, too (but only the first
 *       session - no chance to fully access a "multi-session" CD).
 *       This currently still is too slow (50 kB/sec) - but possibly
 *       the old drives won't do it faster.
 *       Implemented "door (un)lock" for new drives (still does not work
 *       as wanted - no lock possible after an unlock).
 *       Added some debugging printout for the UPC/EAN code - but my drives 
 *       return only zeroes. Is there no UPC/EAN code written?
 *
 *  1.5  Laborate with UPC/EAN code (not better yet).
 *       Adapt to kernel 1.1.8 change (have to explicitly include
 *       <linux/string.h> now).
 *
 *  1.6  Trying to read audio frames as data. Impossible with the current
 *       drive firmware levels, as it seems. Awaiting any hint. ;-)
 *       Changed "door unlock": repeat it until success.
 *       Changed CDROMSTOP routine (stop somewhat "softer" so that Workman
 *       won't get confused).
 *       Added a third interface type: Sequoia S-1000, as used with the SPEA
 *       Media FX sound card. This interface (usable for Sony and Mitsumi 
 *       drives, too) needs a special configuration setup and behaves like a 
 *       LaserMate type after that. Still experimental - I do not have such
 *       an interface.
 *       Use the "variable BLOCK_SIZE" feature (2048). But it does only work
 *       if you give the mount option "block=2048".
 *       The media_check routine is currently disabled; now that it gets
 *       called as it should I fear it must get synchronized for not to
 *       disturb the normal driver's activity.
 *
 *  2.0  Version number bumped - two reasons:
 *       - reading audio tracks as data works now with CR-562 and CR-563. We
 *       currently do it by an IOCTL (yet has to get standardized), one frame
 *       at a time; that is pretty slow. But it works.
 *       - we are maintaining now up to 4 interfaces (each up to 4 drives):
 *       did it the easy way - a different MAJOR (25, 26, ...) and a different
 *       copy of the driver (sbpcd.c, sbpcd2.c, sbpcd3.c, sbpcd4.c - only
 *       distinguished by the value of SBPCD_ISSUE and the driver's name),
 *       and a common sbpcd.h file.
 *       Bettered the "ReadCapacity error" problem with old CR-52x drives (the
 *       drives sometimes need a manual "eject/insert" before work): just
 *       reset the drive and do again. Needs lots of resets here and sometimes
 *       that does not cure, so this can't be the solution.
 *
 *  2.1  Found bug with multisession CDs (accessing frame 16).
 *       "read audio" works now with address type CDROM_MSF, too.
 *       Bigger audio frame buffer: allows reading max. 4 frames at time; this
 *       gives a significant speedup, but reading more than one frame at once
 *       gives missing chunks at each single frame boundary.
 *
 *  2.2  Kernel interface cleanups: timers, init, setup, media check.
 *
 *  2.3  Let "door lock" and "eject" live together.
 *       Implemented "close tray" (done automatically during open).
 *
 *  2.4  Use different names for device registering.
 *
 *  2.5  Added "#if EJECT" code (default: enabled) to automatically eject
 *       the tray during last call to "sbpcd_release".
 *       Added "#if JUKEBOX" code (default: disabled) to automatically eject
 *       the tray during call to "sbpcd_open" if no disk is in.
 *       Turn on the CD volume of "compatible" sound cards, too; just define
 *       SOUND_BASE (in sbpcd.h) accordingly (default: disabled).
 *
 *  2.6  Nothing new.  
 *
 *  2.7  Added CDROMEJECT_SW ioctl to set the "EJECT" behavior on the fly:
 *       0 disables, 1 enables auto-ejecting. Useful to keep the tray in
 *       during shutdown.
 *
 *  2.8  Added first support (still BETA, I need feedback or a drive) for
 *       the Longshine LCS-7260 drives. They appear as double-speed drives
 *       using the "old" command scheme, extended by tray control and door
 *       lock functions.
 *       Found (and fixed preliminary) a flaw with some multisession CDs: we
 *       have to re-direct not only the accesses to frame 16 (the isofs
 *       routines drive it up to max. 100), but also those to the continuation
 *       (repetition) frames (as far as they exist - currently set fix as
 *       16..20).
 *       Changed default of the "JUKEBOX" define. If you use this default,
 *       your tray will eject if you try to mount without a disk in. Next
 *       mount command will insert the tray - so, just fill in a disk. ;-)
 *
 *  2.9  Fulfilled the Longshine LCS-7260 support; with great help and
 *       experiments by Serge Robyns.
 *       First attempts to support the TEAC CD-55A drives; but still not
 *       usable yet.
 *       Implemented the CDROMMULTISESSION ioctl; this is an attempt to handle
 *       multi session CDs more "transparent" (redirection handling has to be
 *       done within the isofs routines, and only for the special purpose of
 *       obtaining the "right" volume descriptor; accesses to the raw device
 *       should not get redirected).
 *
 *  3.0  Just a "normal" increment, with some provisions to do it better. ;-)
 *       Introduced "#define READ_AUDIO" to specify the maximum number of 
 *       audio frames to grab with one request. This defines a buffer size
 *       within kernel space; a value of 0 will reserve no such space and
 *       disable the CDROMREADAUDIO ioctl. A value of 75 enables the reading
 *       of a whole second with one command, but will use a buffer of more
 *       than 172 kB.
 *       Started CD200 support. Drive detection should work, but nothing
 *       more.
 *
 *  3.1  Working to support the CD200 and the Teac CD-55A drives.
 *       AT-BUS style device numbering no longer used: use SCSI style now.
 *       So, the first "found" device has MINOR 0, regardless of the
 *       jumpered drive ID. This implies modifications to the /dev/sbpcd*
 *       entries for some people, but will help the DAU (german TLA, english:
 *       "newbie", maybe ;-) to install his "first" system from a CD.
 *
 *  3.2  Still testing with CD200 and CD-55A drives.
 *
 *  3.3  Working with CD200 support.
 *
 *  3.4  Auto-probing stops if an address of 0 is seen (to be entered with
 *       the kernel command line).
 *       Made the driver "loadable". If used as a module, "audio copy" is
 *       disabled, and the internal read ahead data buffer has a reduced size
 *       of 4 kB; so, throughput may be reduced a little bit with slow CPUs.
 *
 *  3.5  Provisions to handle weird photoCDs which have an interrupted
 *       "formatting" immediately after the last frames of some files: simply
 *       never "read ahead" with MultiSession CDs. By this, CPU usage may be
 *       increased with those CDs, and there may be a loss in speed.
 *       Re-structured the messaging system.
 *       The "loadable" version no longer has a limited READ_AUDIO buffer
 *       size.
 *       Removed "MANY_SESSION" handling for "old" multi session CDs.
 *       Added "private" IOCTLs CDROMRESET and CDROMVOLREAD.
 *       Started again to support the TEAC CD-55A drives, now that I found
 *       the money for "my own" drive. ;-)
 *       The TEAC CD-55A support is fairly working now.
 *       I have measured that the drive "delivers" at 600 kB/sec (even with
 *       bigger requests than the drive's 64 kB buffer can satisfy), but
 *       the "real" rate does not exceed 520 kB/sec at the moment. 
 *       Caused by the various changes to build in TEAC support, the timed
 *       loops are de-optimized at the moment (less throughput with CR-52x
 *       drives, and the TEAC will give speed only with SBP_BUFFER_FRAMES 64).
 *
 *  3.6  Fixed TEAC data read problems with SbPro interfaces.
 *       Initial size of the READ_AUDIO buffer is 0. Can get set to any size
 *       during runtime.
 *
 *  3.7  Introduced MAX_DRIVES for some poor interface cards (seen with TEAC
 *       drives) which allow only one drive (ID 0); this avoids repetitive
 *       detection under IDs 1..3. 
 *       Elongated cmd_out_T response waiting; necessary for photo CDs with
 *       a lot of sessions.
 *       Bettered the sbpcd_open() behavior with TEAC drives.
 *
 *  3.8  Elongated max_latency for CR-56x drives.
 *
 *  3.9  Finally fixed the long-known SoundScape/SPEA/Sequoia S-1000 interface
 *       configuration bug.
 *       Now Corey, Heiko, Ken, Leo, Vadim/Eric & Werner are invited to copy
 *       the config_spea() routine into their drivers. ;-)
 *
 *  4.0  No "big step" - normal version increment.
 *       Adapted the benefits from 1.3.33.
 *       Fiddled with CDROMREADAUDIO flaws.
 *       Avoid ReadCapacity command with CD200 drives (the MKE 1.01 version
 *       seems not to support it).
 *       Fulfilled "read audio" for CD200 drives, with help of Pete Heist
 *       (heistp@rpi.edu).
 *
 *  4.1  Use loglevel KERN_INFO with printk().
 *       Added support for "Vertos 100" drive ("ECS-AT") - it is very similar
 *       to the Longshine LCS-7260. Give feedback if you can - I never saw
 *       such a drive, and I have no specs.
 *
 *  4.2  Support for Teac 16-bit interface cards. Can't get auto-detected,
 *       so you have to jumper your card to 0x2C0. Still not 100% - come
 *       in contact if you can give qualified feedback.
 *       Use loglevel KERN_NOTICE with printk(). If you get annoyed by a
 *       flood of unwanted messages and the accompanied delay, try to read
 *       my documentation. Especially the Linux CDROM drivers have to do an
 *       important job for the newcomers, so the "distributed" version has
 *       to fit some special needs. Since generations, the flood of messages
 *       is user-configurable (even at runtime), but to get aware of this, one
 *       needs a special mental quality: the ability to read.
 *       
 *  4.3  CD200F does not like to receive a command while the drive is
 *       reading the ToC; still trying to solve it.
 *       Removed some redundant verify_area calls (yes, Heiko Eissfeldt
 *       is visiting all the Linux CDROM drivers ;-).
 *       
 *  4.4  Adapted one idea from tiensivu@pilot.msu.edu's "stripping-down"
 *       experiments: "KLOGD_PAUSE".
 *       Inhibited "play audio" attempts with data CDs. Provisions for a
 *       "data-safe" handling of "mixed" (data plus audio) Cds.
 *
 *  4.5  Meanwhile Gonzalo Tornaria <tornaria@cmat.edu.uy> (GTL) built a
 *       special end_request routine: we seem to have to take care for not
 *       to have two processes working at the request list. My understanding
 *       was and is that ll_rw_blk should not call do_sbpcd_request as long
 *       as there is still one call active (the first call will care for all
 *       outstanding I/Os, and if a second call happens, that is a bug in
 *       ll_rw_blk.c).
 *       "Check media change" without touching any drive.
 *
 *  4.6  Use a semaphore to synchronize multi-activity; elaborated by Rob
 *       Riggs <rriggs@tesser.com>. At the moment, we simply block "read"
 *       against "ioctl" and vice versa. This could be refined further, but
 *       I guess with almost no performance increase.
 *       Experiments to speed up the CD-55A; again with help of Rob Riggs
 *       (to be true, he gave both, idea & code. ;-)
 *
 *  4.61 Ported to Uniform CD-ROM driver by 
 *       Heiko Eissfeldt <heiko@colossus.escape.de> with additional
 *       changes by Erik Andersen <andersee@debian.org>
 *
 *  4.62 Fix a bug where playing audio left the drive in an unusable state.
 *         Heiko Eissfeldt <heiko@colossus.escape.de>
 *
 *  November 1999 -- Make kernel-parameter implementation work with 2.3.x 
 *                   Removed init_module & cleanup_module in favor of 
 *                   module_init & module_exit.
 *                   Torben Mathiasen <tmm@image.dk>
 *
 *  4.63 Bug fixes for audio annoyances, new legacy CDROM maintainer.
 *              Annoying things fixed:
 *              TOC reread on automated disk changes
 *              TOC reread on manual cd changes
 *              Play IOCTL tries to play CD before it's actually ready... sometimes.
 *              CD_AUDIO_COMPLETED state so workman (and other playes) can repeat play.
 *              Andrew J. Kroll <ag784@freenet.buffalo.edu> Wed Jul 26 04:24:10 EDT 2000
 *
 *  4.64 Fix module parameters - were being completely ignored.
 *       Can also specify max_drives=N as a setup int to get rid of
 *       "ghost" drives on crap hardware (aren't they all?)   Paul Gortmaker
 *
 *  TODO
 *     implement "read all subchannel data" (96 bytes per frame)
 *     remove alot of the virtual status bits and deal with hardware status
 *     move the change of cd for audio to a better place
 *     add debug levels to insmod parameters (trivial)
 *
 *     special thanks to Kai Makisara (kai.makisara@vtt.fi) for his fine
 *     elaborated speed-up experiments (and the fabulous results!), for
 *     the "push" towards load-free wait loops, and for the extensive mail
 *     thread which brought additional hints and bug fixes.
 *
 */

/*
 * Trying to merge requests breaks this driver horribly (as in it goes
 * boom and apparently has done so since 2.3.41).  As it is a legacy 
 * driver for a horribly slow double speed CD on a hideous interface 
 * designed for polled operation, I won't loose any sleep in simply 
 * disallowing merging.                         Paul G.  02/2001
 */
#define DONT_MERGE_REQUESTS

#ifndef SBPCD_ISSUE
#define SBPCD_ISSUE 1
#endif /* SBPCD_ISSUE */

#include <linux/module.h>

#include <linux/version.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/timer.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/cdrom.h>
#include <linux/ioport.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/major.h> 
#include <linux/string.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/interrupt.h>

#include <asm/system.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <stdarg.h>
#include <linux/config.h>
#include "sbpcd.h"

#if !(SBPCD_ISSUE-1)
#define MAJOR_NR MATSUSHITA_CDROM_MAJOR
#endif
#if !(SBPCD_ISSUE-2)
#define MAJOR_NR MATSUSHITA_CDROM2_MAJOR /* second driver issue */
#endif
#if !(SBPCD_ISSUE-3)
#define MAJOR_NR MATSUSHITA_CDROM3_MAJOR /* third driver issue */
#endif
#if !(SBPCD_ISSUE-4)
#define MAJOR_NR MATSUSHITA_CDROM4_MAJOR /* fourth driver issue */
#endif

#include <linux/blk.h>

/*==========================================================================*/
/*
 * provisions for more than 1 driver issues
 * currently up to 4 drivers, expandable
 */
#if !(SBPCD_ISSUE-1)
#define DO_SBPCD_REQUEST(a) do_sbpcd_request(a)
#define SBPCD_INIT(a) sbpcd_init(a)
#endif
#if !(SBPCD_ISSUE-2)
#define DO_SBPCD_REQUEST(a) do_sbpcd2_request(a)
#define SBPCD_INIT(a) sbpcd2_init(a)
#endif
#if !(SBPCD_ISSUE-3)
#define DO_SBPCD_REQUEST(a) do_sbpcd3_request(a)
#define SBPCD_INIT(a) sbpcd3_init(a)
#endif
#if !(SBPCD_ISSUE-4)
#define DO_SBPCD_REQUEST(a) do_sbpcd4_request(a)
#define SBPCD_INIT(a) sbpcd4_init(a)
#endif
/*==========================================================================*/
#if SBPCD_DIS_IRQ
#define SBPCD_CLI cli()
#define SBPCD_STI sti()
#else
#define SBPCD_CLI
#define SBPCD_STI
#endif /* SBPCD_DIS_IRQ */
/*==========================================================================*/
/*
 * auto-probing address list
 * inspired by Adam J. Richter from Yggdrasil
 *
 * still not good enough - can cause a hang.
 *   example: a NE 2000 ethernet card at 300 will cause a hang probing 310.
 * if that happens, reboot and use the LILO (kernel) command line.
 * The possibly conflicting ethernet card addresses get NOT probed 
 * by default - to minimize the hang possibilities. 
 *
 * The SB Pro addresses get "mirrored" at 0x6xx and some more locations - to
 * avoid a type error, the 0x2xx-addresses must get checked before 0x6xx.
 *
 * send mail to emoenke@gwdg.de if your interface card is not FULLY
 * represented here.
 */
#if !(SBPCD_ISSUE-1)
static int sbpcd[] = 
{
        CDROM_PORT, SBPRO, /* probe with user's setup first */
#if DISTRIBUTION
        0x230, 1, /* Soundblaster Pro and 16 (default) */
#if 0
        0x300, 0, /* CI-101P (default), WDH-7001C (default),
                     Galaxy (default), Reveal (one default) */
        0x250, 1, /* OmniCD default, Soundblaster Pro and 16 */
        0x2C0, 3, /* Teac 16-bit cards */
        0x260, 1, /* OmniCD */
        0x320, 0, /* Lasermate, CI-101P, WDH-7001C, Galaxy, Reveal (other default),
                     Longshine LCS-6853 (default) */
        0x338, 0, /* Reveal Sound Wave 32 card model #SC600 */
        0x340, 0, /* Mozart sound card (default), Lasermate, CI-101P */
        0x360, 0, /* Lasermate, CI-101P */
        0x270, 1, /* Soundblaster 16 */
        0x670, 0, /* "sound card #9" */
        0x690, 0, /* "sound card #9" */
        0x338, 2, /* SPEA Media FX, Ensonic SoundScape (default) */
        0x328, 2, /* SPEA Media FX */
        0x348, 2, /* SPEA Media FX */
        0x634, 0, /* some newer sound cards */
        0x638, 0, /* some newer sound cards */
        0x230, 1, /* some newer sound cards */
        /* due to incomplete address decoding of the SbPro card, these must be last */
        0x630, 0, /* "sound card #9" (default) */
        0x650, 0, /* "sound card #9" */
#ifdef MODULE
        /*
         * some "hazardous" locations (no harm with the loadable version)
         * (will stop the bus if a NE2000 ethernet card resides at offset -0x10)
         */
        0x330, 0, /* Lasermate, CI-101P, WDH-7001C */
        0x350, 0, /* Lasermate, CI-101P */
        0x358, 2, /* SPEA Media FX */
        0x370, 0, /* Lasermate, CI-101P */
        0x290, 1, /* Soundblaster 16 */
        0x310, 0, /* Lasermate, CI-101P, WDH-7001C */
#endif /* MODULE */
#endif
#endif /* DISTRIBUTION */
};
#else
static int sbpcd[] = {CDROM_PORT, SBPRO}; /* probe with user's setup only */
#endif
MODULE_PARM(sbpcd, "2i");
MODULE_PARM(max_drives, "i");

#define NUM_PROBE  (sizeof(sbpcd) / sizeof(int))

/*==========================================================================*/
/*
 * the external references:
 */
#if !(SBPCD_ISSUE-1)
#ifdef CONFIG_SBPCD2
extern int sbpcd2_init(void);
#endif
#ifdef CONFIG_SBPCD3
extern int sbpcd3_init(void);
#endif
#ifdef CONFIG_SBPCD4
extern int sbpcd4_init(void);
#endif
#endif

/*==========================================================================*/

#define INLINE inline

/*==========================================================================*/
/*
 * the forward references:
 */
static void sbp_sleep(u_int);
static void mark_timeout_delay(u_long);
static void mark_timeout_data(u_long);
#if 0
static void mark_timeout_audio(u_long);
#endif
static void sbp_read_cmd(struct request *req);
static int sbp_data(struct request *req);
static int cmd_out(void);
static int DiskInfo(void);
static int sbpcd_chk_disk_change(kdev_t);

/*==========================================================================*/

/*
 * pattern for printk selection:
 *
 * (1<<DBG_INF)  necessary information
 * (1<<DBG_BSZ)  BLOCK_SIZE trace
 * (1<<DBG_REA)  "read" status trace
 * (1<<DBG_CHK)  "media check" trace
 * (1<<DBG_TIM)  datarate timer test
 * (1<<DBG_INI)  initialization trace
 * (1<<DBG_TOC)  tell TocEntry values
 * (1<<DBG_IOC)  ioctl trace
 * (1<<DBG_STA)  "ResponseStatus" trace
 * (1<<DBG_ERR)  "cc_ReadError" trace
 * (1<<DBG_CMD)  "cmd_out" trace
 * (1<<DBG_WRN)  give explanation before auto-probing
 * (1<<DBG_MUL)  multi session code test
 * (1<<DBG_IDX)  "drive_id != 0" test code
 * (1<<DBG_IOX)  some special information
 * (1<<DBG_DID)  drive ID test
 * (1<<DBG_RES)  drive reset info
 * (1<<DBG_SPI)  SpinUp test info
 * (1<<DBG_IOS)  ioctl trace: "subchannel"
 * (1<<DBG_IO2)  ioctl trace: general
 * (1<<DBG_UPC)  show UPC info
 * (1<<DBG_XA1)  XA mode debugging
 * (1<<DBG_LCK)  door (un)lock info
 * (1<<DBG_SQ1)   dump SubQ frame
 * (1<<DBG_AUD)  "read audio" debugging
 * (1<<DBG_SEQ)  Sequoia interface configuration trace
 * (1<<DBG_LCS)  Longshine LCS-7260 debugging trace
 * (1<<DBG_CD2)  MKE/Funai CD200 debugging trace
 * (1<<DBG_TEA)  TEAC CD-55A debugging trace
 * (1<<DBG_ECS)  ECS-AT (Vertos-100) debugging trace
 * (1<<DBG_000)  unnecessary information
 */
#if DISTRIBUTION
static int sbpcd_debug = (1<<DBG_INF);
#else
static int sbpcd_debug = 0 & ((1<<DBG_INF) |
                          (1<<DBG_TOC) |
                          (1<<DBG_MUL) |
                          (1<<DBG_UPC));
#endif /* DISTRIBUTION */

static int sbpcd_ioaddr = CDROM_PORT;   /* default I/O base address */
static int sbpro_type = SBPRO;
static unsigned char f_16bit;
static unsigned char do_16bit;
static int CDo_command, CDo_reset;
static int CDo_sel_i_d, CDo_enable;
static int CDi_info, CDi_status, CDi_data;
static struct cdrom_msf msf;
static struct cdrom_ti ti;
static struct cdrom_tochdr tochdr;
static struct cdrom_tocentry tocentry;
static struct cdrom_subchnl SC;
static struct cdrom_volctrl volctrl;
static struct cdrom_read_audio read_audio;

static unsigned char msgnum;
static char msgbuf[80];

static int max_drives = MAX_DRIVES;
#ifndef MODULE
static unsigned char setup_done;
static const char *str_sb_l = "soundblaster";
static const char *str_sp_l = "spea";
static const char *str_ss_l = "soundscape";
static const char *str_t16_l = "teac16bit";
static const char *str_ss = "SoundScape";
#endif
static const char *str_sb = "SoundBlaster";
static const char *str_lm = "LaserMate";
static const char *str_sp = "SPEA";
static const char *str_t16 = "Teac16bit";
static const char *type;

#if !(SBPCD_ISSUE-1)
static const char *major_name="sbpcd";
#endif
#if !(SBPCD_ISSUE-2)
static const char *major_name="sbpcd2";
#endif
#if !(SBPCD_ISSUE-3)
static const char *major_name="sbpcd3";
#endif
#if !(SBPCD_ISSUE-4)
static const char *major_name="sbpcd4";
#endif

/*==========================================================================*/

#if FUTURE
static DECLARE_WAIT_QUEUE_HEAD(sbp_waitq);
#endif /* FUTURE */

static int teac=SBP_TEAC_SPEED;
static int buffers=SBP_BUFFER_FRAMES;

static u_char family0[]="MATSHITA"; /* MKE CR-521, CR-522, CR-523 */
static u_char family1[]="CR-56";    /* MKE CR-562, CR-563 */
static u_char family2[]="CD200";    /* MKE CD200, Funai CD200F */
static u_char familyL[]="LCS-7260"; /* Longshine LCS-7260 */
static u_char familyT[]="CD-55";    /* TEAC CD-55A */
static u_char familyV[]="ECS-AT";   /* ECS Vertos 100 */

static u_int recursion; /* internal testing only */
static u_int fatal_err; /* internal testing only */
static u_int response_count;
static u_int flags_cmd_out;
static u_char cmd_type;
static u_char drvcmd[10];
static u_char infobuf[20];
static u_char xa_head_buf[CD_XA_HEAD];
static u_char xa_tail_buf[CD_XA_TAIL];

#if OLD_BUSY
static volatile u_char busy_data;
static volatile u_char busy_audio; /* true semaphores would be safer */
#endif /* OLD_BUSY */ 
static DECLARE_MUTEX(ioctl_read_sem);
static u_long timeout;
static volatile u_char timed_out_delay;
static volatile u_char timed_out_data;
#if 0
static volatile u_char timed_out_audio;
#endif
static u_int datarate= 1000000;
static u_int maxtim16=16000000;
static u_int maxtim04= 4000000;
static u_int maxtim02= 2000000;
static u_int maxtim_8=   30000;
#if LONG_TIMING
static u_int maxtim_data= 9000;
#else
static u_int maxtim_data= 3000;
#endif /* LONG_TIMING */ 
#if DISTRIBUTION
static int n_retries=6;
#else
static int n_retries=6;
#endif
/*==========================================================================*/

static int ndrives;
static u_char drv_pattern[NR_SBPCD]={speed_auto,speed_auto,speed_auto,speed_auto};
static int sbpcd_blocksizes[NR_SBPCD];

/*==========================================================================*/
/*
 * drive space begins here (needed separate for each unit) 
 */
static int d; /* DriveStruct index: drive number */

static struct {
        char drv_id;           /* "jumpered" drive ID or -1 */
        char drv_sel;          /* drive select lines bits */
        
        char drive_model[9];
        u_char firmware_version[4];
        char f_eject;          /* auto-eject flag: 0 or 1 */
        u_char *sbp_buf;       /* Pointer to internal data buffer,
                                  space allocated during sbpcd_init() */
        u_int sbp_bufsiz;      /* size of sbp_buf (# of frames) */
        int sbp_first_frame;   /* First frame in buffer */
        int sbp_last_frame;    /* Last frame in buffer  */
        int sbp_read_frames;   /* Number of frames being read to buffer */
        int sbp_current;       /* Frame being currently read */
        
        u_char mode;           /* read_mode: READ_M1, READ_M2, READ_SC, READ_AU */
        u_char *aud_buf;       /* Pointer to audio data buffer,
                                  space allocated during sbpcd_init() */
        u_int sbp_audsiz;      /* size of aud_buf (# of raw frames) */
        u_int drv_type;
        u_char drv_options;
        int status_bits;
        u_char diskstate_flags;
        u_char sense_byte;
        
        u_char CD_changed;
        char open_count;
        u_char error_byte;
        
        u_char f_multisession;
        u_int lba_multi;
        int first_session;
        int last_session;
        int track_of_last_session;
        
        u_char audio_state;
        u_int pos_audio_start;
        u_int pos_audio_end;
        char vol_chan0;
        u_char vol_ctrl0;
        char vol_chan1;
        u_char vol_ctrl1;
#if 000 /* no supported drive has it */
        char vol_chan2;
        u_char vol_ctrl2;
        char vol_chan3;
        u_char vol_ctrl3;
#endif /*000 */
        u_char volume_control; /* TEAC on/off bits */
        
        u_char SubQ_ctl_adr;
        u_char SubQ_trk;
        u_char SubQ_pnt_idx;
        u_int SubQ_run_tot;
        u_int SubQ_run_trk;
        u_char SubQ_whatisthis;
        
        u_char UPC_ctl_adr;
        u_char UPC_buf[7];
        
        int frame_size;
        int CDsize_frm;
        
        u_char xa_byte; /* 0x20: XA capabilities */
        u_char n_first_track; /* binary */
        u_char n_last_track; /* binary (not bcd), 0x01...0x63 */
        u_int size_msf; /* time of whole CD, position of LeadOut track */
        u_int size_blk;
        
        u_char TocEnt_nixbyte; /* em */
        u_char TocEnt_ctl_adr;
        u_char TocEnt_number;
        u_char TocEnt_format; /* em */
        u_int TocEnt_address;
#if SAFE_MIXED
        char has_data;
#endif /* SAFE_MIXED */ 
        u_char ored_ctl_adr; /* to detect if CDROM contains data tracks */
        
        struct {
                u_char nixbyte; /* em */
                u_char ctl_adr; /* 0x4x: data, 0x0x: audio */
                u_char number;
                u_char format; /* em */ /* 0x00: lba, 0x01: msf */
                u_int address;
        } TocBuffer[MAX_TRACKS+1]; /* last entry faked */ 
        
        int in_SpinUp; /* CR-52x test flag */
        int n_bytes; /* TEAC awaited response count */
        u_char error_state, b3, b4; /* TEAC command error state */
        u_char f_drv_error; /* TEAC command error flag */
        u_char speed_byte;
        int frmsiz;
        u_char f_XA; /* 1: XA */
        u_char type_byte; /* 0, 1, 3 */
        u_char mode_xb_6;
        u_char mode_yb_7;
        u_char mode_xb_8;
        u_char delay;
        struct cdrom_device_info *sbpcd_infop;

} D_S[NR_SBPCD];

/*
 * drive space ends here (needed separate for each unit)
 */
/*==========================================================================*/
#if 0
unsigned long cli_sti; /* for saving the processor flags */
#endif
/*==========================================================================*/
static struct timer_list delay_timer = { function: mark_timeout_delay};
static struct timer_list data_timer = { function: mark_timeout_data};
#if 0
static struct timer_list audio_timer = { function: mark_timeout_audio};
#endif
/*==========================================================================*/
/*
 * DDI interface
 */
static void msg(int level, const char *fmt, ...)
{
#if DISTRIBUTION
#define MSG_LEVEL KERN_NOTICE
#else
#define MSG_LEVEL KERN_INFO
#endif /* DISTRIBUTION */

        char buf[256];
        va_list args;
        
        if (!(sbpcd_debug&(1<<level))) return;
        
        msgnum++;
        if (msgnum>99) msgnum=0;
        sprintf(buf, MSG_LEVEL "%s-%d [%02d]:  ", major_name, d, msgnum);
        va_start(args, fmt);
        vsprintf(&buf[18], fmt, args);
        va_end(args);
        printk(buf);
#if KLOGD_PAUSE
        sbp_sleep(KLOGD_PAUSE); /* else messages get lost */
#endif /* KLOGD_PAUSE */ 
        return;
}
/*==========================================================================*/
/*
 * DDI interface: runtime trace bit pattern maintenance
 */
static int sbpcd_dbg_ioctl(unsigned long arg, int level)
{
        switch(arg)
        {
        case 0: /* OFF */
                sbpcd_debug = DBG_INF;
                break;
                
        default:
                if (arg>=128) sbpcd_debug &= ~(1<<(arg-128));
                else sbpcd_debug |= (1<<arg);
        }
        return (arg);
}
/*==========================================================================*/
static void mark_timeout_delay(u_long i)
{
        timed_out_delay=1;
#if 0
        msg(DBG_TIM,"delay timer expired.\n");
#endif
}
/*==========================================================================*/
static void mark_timeout_data(u_long i)
{
        timed_out_data=1;
#if 0
        msg(DBG_TIM,"data timer expired.\n");
#endif
}
/*==========================================================================*/
#if 0
static void mark_timeout_audio(u_long i)
{
        timed_out_audio=1;
#if 0
        msg(DBG_TIM,"audio timer expired.\n");
#endif
}
#endif
/*==========================================================================*/
/*
 * Wait a little while (used for polling the drive).
 */
static void sbp_sleep(u_int time)
{
        sti();
        current->state = TASK_INTERRUPTIBLE;
        schedule_timeout(time);
        sti();
}
/*==========================================================================*/
#define RETURN_UP(rc) {up(&ioctl_read_sem); return(rc);}
/*==========================================================================*/
/*
 *  convert logical_block_address to m-s-f_number (3 bytes only)
 */
static INLINE void lba2msf(int lba, u_char *msf)
{
        lba += CD_MSF_OFFSET;
        msf[0] = lba / (CD_SECS*CD_FRAMES);
        lba %= CD_SECS*CD_FRAMES;
        msf[1] = lba / CD_FRAMES;
        msf[2] = lba % CD_FRAMES;
}
/*==========================================================================*/
/*==========================================================================*/
/*
 *  convert msf-bin to msf-bcd
 */
static INLINE void bin2bcdx(u_char *p)  /* must work only up to 75 or 99 */
{
        *p=((*p/10)<<4)|(*p%10);
}
/*==========================================================================*/
static INLINE u_int blk2msf(u_int blk)
{
        MSF msf;
        u_int mm;
        
        msf.c[3] = 0;
        msf.c[2] = (blk + CD_MSF_OFFSET) / (CD_SECS * CD_FRAMES);
        mm = (blk + CD_MSF_OFFSET) % (CD_SECS * CD_FRAMES);
        msf.c[1] = mm / CD_FRAMES;
        msf.c[0] = mm % CD_FRAMES;
        return (msf.n);
}
/*==========================================================================*/
static INLINE u_int make16(u_char rh, u_char rl)
{
        return ((rh<<8)|rl);
}
/*==========================================================================*/
static INLINE u_int make32(u_int rh, u_int rl)
{
        return ((rh<<16)|rl);
}
/*==========================================================================*/
static INLINE u_char swap_nibbles(u_char i)
{
        return ((i<<4)|(i>>4));
}
/*==========================================================================*/
static INLINE u_char byt2bcd(u_char i)
{
        return (((i/10)<<4)+i%10);
}
/*==========================================================================*/
static INLINE u_char bcd2bin(u_char bcd)
{
        return ((bcd>>4)*10+(bcd&0x0F));
}
/*==========================================================================*/
static INLINE int msf2blk(int msfx)
{
        MSF msf;
        int i;
        
        msf.n=msfx;
        i=(msf.c[2] * CD_SECS + msf.c[1]) * CD_FRAMES + msf.c[0] - CD_MSF_OFFSET;
        if (i<0) return (0);
        return (i);
}
/*==========================================================================*/
/*
 *  convert m-s-f_number (3 bytes only) to logical_block_address 
 */
static INLINE int msf2lba(u_char *msf)
{
        int i;
        
        i=(msf[0] * CD_SECS + msf[1]) * CD_FRAMES + msf[2] - CD_MSF_OFFSET;
        if (i<0) return (0);
        return (i);
}
/*==========================================================================*/
/* evaluate cc_ReadError code */ 
static int sta2err(int sta)
{
        if (famT_drive)
        {
                if (sta==0x00) return (0);
                if (sta==0x01) return (-604); /* CRC error */
                if (sta==0x02) return (-602); /* drive not ready */
                if (sta==0x03) return (-607); /* unknown media */
                if (sta==0x04) return (-612); /* general failure */
                if (sta==0x05) return (0);
                if (sta==0x06) return (-ERR_DISKCHANGE); /* disk change */
                if (sta==0x0b) return (-612); /* general failure */
                if (sta==0xff) return (-612); /* general failure */
                return (0);
        }
        else
        {
                if (sta<=2) return (sta);
                if (sta==0x05) return (-604); /* CRC error */
                if (sta==0x06) return (-606); /* seek error */
                if (sta==0x0d) return (-606); /* seek error */
                if (sta==0x0e) return (-603); /* unknown command */
                if (sta==0x14) return (-603); /* unknown command */
                if (sta==0x0c) return (-611); /* read fault */
                if (sta==0x0f) return (-611); /* read fault */
                if (sta==0x10) return (-611); /* read fault */
                if (sta>=0x16) return (-612); /* general failure */
                if (sta==0x11) return (-ERR_DISKCHANGE); /* disk change (LCS: removed) */
                if (famL_drive)
                        if (sta==0x12) return (-ERR_DISKCHANGE); /* disk change (inserted) */

                return (-602); /* drive not ready */
        }
}
/*==========================================================================*/
static INLINE void clr_cmdbuf(void)
{
        int i;
        
        for (i=0;i<10;i++) drvcmd[i]=0;
        cmd_type=0;
}
/*==========================================================================*/
static void flush_status(void)
{
        int i;
        
        sbp_sleep(15*HZ/10);
        for (i=maxtim_data;i!=0;i--) inb(CDi_status);
}
/*====================================================================*/
/*
 * CDi status loop for Teac CD-55A (Rob Riggs)
 *
 * This is needed because for some strange reason
 * the CD-55A can take a real long time to give a
 * status response. This seems to happen after we
 * issue a READ command where a long seek is involved.
 *
 * I tried to ensure that we get max throughput with
 * minimal busy waiting. We busy wait at first, then
 * "switch gears" and start sleeping. We sleep for
 * longer periods of time the longer we wait.
 *
 */
static int CDi_stat_loop_T(void)
{
        int     i, gear=1;
        u_long  timeout_1, timeout_2, timeout_3, timeout_4;

        timeout_1 = jiffies + HZ / 50;  /* sbp_sleep(0) for a short period */
        timeout_2 = jiffies + HZ / 5;   /* nap for no more than 200ms */
        timeout_3 = jiffies + 5 * HZ;   /* sleep for up to 5s */
        timeout_4 = jiffies + 45 * HZ;  /* long sleep for up to 45s. */
        do
          {
            i = inb(CDi_status);
            if (!(i&s_not_data_ready)) return (i);
            if (!(i&s_not_result_ready)) return (i);
            switch(gear)
              {
              case 4:
                sbp_sleep(HZ);
                if (time_after(jiffies, timeout_4)) gear++;
                msg(DBG_TEA, "CDi_stat_loop_T: long sleep active.\n");
                break;
              case 3:
                sbp_sleep(HZ/10);
                if (time_after(jiffies, timeout_3)) gear++;
                break;
              case 2:
                sbp_sleep(HZ/100);
                if (time_after(jiffies, timeout_2)) gear++;
                break;
              case 1:
                sbp_sleep(0);
                if (time_after(jiffies, timeout_1)) gear++;
              }
          } while (gear < 5);
        return -1;
}
/*==========================================================================*/
static int CDi_stat_loop(void)
{
        int i,j;
        
        for(timeout = jiffies + 10*HZ, i=maxtim_data; time_before(jiffies, timeout); )
        {
                for ( ;i!=0;i--)
                {
                        j=inb(CDi_status);
                        if (!(j&s_not_data_ready)) return (j);
                        if (!(j&s_not_result_ready)) return (j);
                        if (fam0L_drive) if (j&s_attention) return (j);
                }
                sbp_sleep(1);
                i = 1;
        }
        msg(DBG_LCS,"CDi_stat_loop failed in line %d\n", __LINE__);
        return (-1);
}
/*==========================================================================*/
#if 00000
/*==========================================================================*/
static int tst_DataReady(void)
{
        int i;
        
        i=inb(CDi_status);
        if (i&s_not_data_ready) return (0);
        return (1);
}
/*==========================================================================*/
static int tst_ResultReady(void)
{
        int i;
        
        i=inb(CDi_status);
        if (i&s_not_result_ready) return (0);
        return (1);
}
/*==========================================================================*/
static int tst_Attention(void)
{
        int i;
        
        i=inb(CDi_status);
        if (i&s_attention) return (1);
        return (0);
}
/*==========================================================================*/
#endif
/*==========================================================================*/
static int ResponseInfo(void)
{
        int i,j,st=0;
        u_long timeout;
        
        for (i=0,timeout=jiffies+HZ;i<response_count;i++) 
        {
                for (j=maxtim_data; ; )
                {
                        for ( ;j!=0;j-- )
                        {
                                st=inb(CDi_status);
                                if (!(st&s_not_result_ready)) break;
                        }
                        if ((j!=0)||time_after_eq(jiffies, timeout)) break;
                        sbp_sleep(1);
                        j = 1;
                }
                if (time_after_eq(jiffies, timeout)) break;
                infobuf[i]=inb(CDi_info);
        }
#if 000
        while (!(inb(CDi_status)&s_not_result_ready))
        {
                infobuf[i++]=inb(CDi_info);
        }
        j=i-response_count;
        if (j>0) msg(DBG_INF,"ResponseInfo: got %d trailing bytes.\n",j);
#endif /* 000 */
        for (j=0;j<i;j++)
                sprintf(&msgbuf[j*3]," %02X",infobuf[j]);
        msgbuf[j*3]=0;
        msg(DBG_CMD,"ResponseInfo:%s (%d,%d)\n",msgbuf,response_count,i);
        j=response_count-i;
        if (j>0) return (-j);
        else return (i);
}
/*==========================================================================*/
static void EvaluateStatus(int st)
{
        D_S[d].status_bits=0;
        if (fam1_drive) D_S[d].status_bits=st|p_success;
        else if (fam0_drive)
        {
                if (st&p_caddin_old) D_S[d].status_bits |= p_door_closed|p_caddy_in;
                if (st&p_spinning) D_S[d].status_bits |= p_spinning;
                if (st&p_check) D_S[d].status_bits |= p_check;
                if (st&p_success_old) D_S[d].status_bits |= p_success;
                if (st&p_busy_old) D_S[d].status_bits |= p_busy_new;
                if (st&p_disk_ok) D_S[d].status_bits |= p_disk_ok;
        }
        else if (famLV_drive)
        {
                D_S[d].status_bits |= p_success;
                if (st&p_caddin_old) D_S[d].status_bits |= p_disk_ok|p_caddy_in;
                if (st&p_spinning) D_S[d].status_bits |= p_spinning;
                if (st&p_check) D_S[d].status_bits |= p_check;
                if (st&p_busy_old) D_S[d].status_bits |= p_busy_new;
                if (st&p_lcs_door_closed) D_S[d].status_bits |= p_door_closed;
                if (st&p_lcs_door_locked) D_S[d].status_bits |= p_door_locked;
        }
        else if (fam2_drive)
        {
                D_S[d].status_bits |= p_success;
                if (st&p2_check) D_S[d].status_bits |= p1_check;
                if (st&p2_door_closed) D_S[d].status_bits |= p1_door_closed;
                if (st&p2_disk_in) D_S[d].status_bits |= p1_disk_in;
                if (st&p2_busy1) D_S[d].status_bits |= p1_busy;
                if (st&p2_busy2) D_S[d].status_bits |= p1_busy;
                if (st&p2_spinning) D_S[d].status_bits |= p1_spinning;
                if (st&p2_door_locked) D_S[d].status_bits |= p1_door_locked;
                if (st&p2_disk_ok) D_S[d].status_bits |= p1_disk_ok;
        }
        else if (famT_drive)
        {
                return; /* still needs to get coded */
                D_S[d].status_bits |= p_success;
                if (st&p2_check) D_S[d].status_bits |= p1_check;
                if (st&p2_door_closed) D_S[d].status_bits |= p1_door_closed;
                if (st&p2_disk_in) D_S[d].status_bits |= p1_disk_in;
                if (st&p2_busy1) D_S[d].status_bits |= p1_busy;
                if (st&p2_busy2) D_S[d].status_bits |= p1_busy;
                if (st&p2_spinning) D_S[d].status_bits |= p1_spinning;
                if (st&p2_door_locked) D_S[d].status_bits |= p1_door_locked;
                if (st&p2_disk_ok) D_S[d].status_bits |= p1_disk_ok;
        }
        return;
}
/*==========================================================================*/
static int get_state_T(void)
{
        int i;
        
        static int cmd_out_T(void);

        clr_cmdbuf();
        D_S[d].n_bytes=1;
        drvcmd[0]=CMDT_STATUS;
        i=cmd_out_T();
        if (i>=0) i=infobuf[0];
        else
        {
                msg(DBG_TEA,"get_state_T error %d\n", i);
                return (i);
        }
        if (i>=0)
                /* 2: closed, disk in */
                D_S[d].status_bits=p1_door_closed|p1_disk_in|p1_spinning|p1_disk_ok;
        else if (D_S[d].error_state==6)
        {
                /* 3: closed, disk in, changed ("06 xx xx") */
                D_S[d].status_bits=p1_door_closed|p1_disk_in;
                D_S[d].CD_changed=0xFF;
                D_S[d].diskstate_flags &= ~toc_bit;
        }
        else if ((D_S[d].error_state!=2)||(D_S[d].b3!=0x3A)||(D_S[d].b4==0x00))
        {
                /* 1: closed, no disk ("xx yy zz"or "02 3A 00") */
                D_S[d].status_bits=p1_door_closed;
                D_S[d].open_count=0;
        }
        else if (D_S[d].b4==0x01)
        {
                /* 0: open ("02 3A 01") */
                D_S[d].status_bits=0;
                D_S[d].open_count=0;
        }
        else
        {
                /* 1: closed, no disk ("02 3A xx") */
                D_S[d].status_bits=p1_door_closed;
                D_S[d].open_count=0;
        }
        return (D_S[d].status_bits);
}
/*==========================================================================*/
static int ResponseStatus(void)
{
        int i,j;
        u_long timeout;
        
        msg(DBG_STA,"doing ResponseStatus...\n");
        if (famT_drive) return (get_state_T());
        if (flags_cmd_out & f_respo3) timeout = jiffies;
        else if (flags_cmd_out & f_respo2) timeout = jiffies + 16*HZ;
        else timeout = jiffies + 4*HZ;
        j=maxtim_8;
        do
        {
                for ( ;j!=0;j--)
                { 
                        i=inb(CDi_status);
                        if (!(i&s_not_result_ready)) break;
                }
                if ((j!=0)||time_after(jiffies, timeout)) break;
                sbp_sleep(1);
                j = 1;
        }
        while (1);
        if (j==0) 
        {
                if ((flags_cmd_out & f_respo3) == 0)
                        msg(DBG_STA,"ResponseStatus: timeout.\n");
                D_S[d].status_bits=0;
                return (-401);
        }
        i=inb(CDi_info);
        msg(DBG_STA,"ResponseStatus: response %02X.\n", i);
        EvaluateStatus(i);
        msg(DBG_STA,"status_bits=%02X, i=%02X\n",D_S[d].status_bits,i);
        return (D_S[d].status_bits);
}
/*==========================================================================*/
static void cc_ReadStatus(void)
{
        int i;
        
        msg(DBG_STA,"giving cc_ReadStatus command\n");
        if (famT_drive) return;
        SBPCD_CLI;
        if (fam0LV_drive) OUT(CDo_command,CMD0_STATUS);
        else if (fam1_drive) OUT(CDo_command,CMD1_STATUS);
        else if (fam2_drive) OUT(CDo_command,CMD2_STATUS);
        if (!fam0LV_drive) for (i=0;i<6;i++) OUT(CDo_command,0);
        SBPCD_STI;
}
/*==========================================================================*/
static int cc_ReadError(void)
{
        int i;

        clr_cmdbuf();
        msg(DBG_ERR,"giving cc_ReadError command.\n");
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_READ_ERR;
                response_count=8;
                flags_cmd_out=f_putcmd|f_ResponseStatus;
        }
        else if (fam0LV_drive)
        {
                drvcmd[0]=CMD0_READ_ERR;
                response_count=6;
                if (famLV_drive)
                        flags_cmd_out=f_putcmd;
                else
                        flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_READ_ERR;
                response_count=6;
                flags_cmd_out=f_putcmd;
        }
        else if (famT_drive)
        {
                response_count=5;
                drvcmd[0]=CMDT_READ_ERR;
        }
        i=cmd_out();
        D_S[d].error_byte=0;
        msg(DBG_ERR,"cc_ReadError: cmd_out(CMDx_READ_ERR) returns %d (%02X)\n",i,i);
        if (i<0) return (i);
        if (fam0V_drive) i=1;
        else i=2;
        D_S[d].error_byte=infobuf[i];
        msg(DBG_ERR,"cc_ReadError: infobuf[%d] is %d (%02X)\n",i,D_S[d].error_byte,D_S[d].error_byte);
        i=sta2err(infobuf[i]);
        if (i==-ERR_DISKCHANGE)
        {
                D_S[d].CD_changed=0xFF;
                D_S[d].diskstate_flags &= ~toc_bit;
        }
        return (i);
}
/*==========================================================================*/
static int cmd_out_T(void)
{
#undef CMDT_TRIES
#define CMDT_TRIES 1000
#define TEST_FALSE_FF 1
        
        static int cc_DriveReset(void);
        int i, j, l=0, m, ntries;
        long flags;

        D_S[d].error_state=0;
        D_S[d].b3=0;
        D_S[d].b4=0;
        D_S[d].f_drv_error=0;
        for (i=0;i<10;i++) sprintf(&msgbuf[i*3]," %02X",drvcmd[i]);
        msgbuf[i*3]=0;
        msg(DBG_CMD,"cmd_out_T:%s\n",msgbuf);

        OUT(CDo_sel_i_d,0);
        OUT(CDo_enable,D_S[d].drv_sel);
        i=inb(CDi_status);
        do_16bit=0;
        if ((f_16bit)&&(!(i&0x80)))
        {
                do_16bit=1;
                msg(DBG_TEA,"cmd_out_T: do_16bit set.\n");
        }
        if (!(i&s_not_result_ready))
        do
        {
                j=inb(CDi_info);
                i=inb(CDi_status);
                sbp_sleep(0);
                msg(DBG_TEA,"cmd_out_T: spurious !s_not_result_ready. (%02X)\n", j);
        }
        while (!(i&s_not_result_ready));
        save_flags(flags); cli();
        for (i=0;i<10;i++) OUT(CDo_command,drvcmd[i]);
        restore_flags(flags);
        for (ntries=CMDT_TRIES;ntries>0;ntries--)
        {
                if (drvcmd[0]==CMDT_READ_VER) sbp_sleep(HZ); /* fixme */
#if 01
                OUT(CDo_sel_i_d,1);
#endif /* 01 */
                if (teac==2)
                  {
                    if ((i=CDi_stat_loop_T()) == -1) break;
                  }
                else
                  {
#if 0
                    OUT(CDo_sel_i_d,1);
#endif /* 0 */ 
                    i=inb(CDi_status);
                  }
                if (!(i&s_not_data_ready)) /* f.e. CMDT_DISKINFO */
                {
                        OUT(CDo_sel_i_d,1);
                        if (drvcmd[0]==CMDT_READ) return (0); /* handled elsewhere */
                        if (drvcmd[0]==CMDT_DISKINFO)
                        {
                                l=0;
                                do
                                {
                                        if (do_16bit)
                                        {
                                                i=inw(CDi_data);
                                                infobuf[l++]=i&0x0ff;
                                                infobuf[l++]=i>>8;
#if TEST_FALSE_FF
                                                if ((l==2)&&(infobuf[0]==0x0ff))
                                                {
                                                        infobuf[0]=infobuf[1];
                                                        l=1;
                                                        msg(DBG_TEA,"cmd_out_T: do_16bit: false first byte!\n");
                                                }
#endif /* TEST_FALSE_FF */ 
                                        }
                                        else infobuf[l++]=inb(CDi_data);
                                        i=inb(CDi_status);
                                }
                                while (!(i&s_not_data_ready));
                                for (j=0;j<l;j++) sprintf(&msgbuf[j*3]," %02X",infobuf[j]);
                                msgbuf[j*3]=0;
                                msg(DBG_CMD,"cmd_out_T data response:%s\n", msgbuf);
                        }
                        else
                        {
                                msg(DBG_TEA,"cmd_out_T: data response with cmd_%02X!\n",
                                    drvcmd[0]);
                                j=0;
                                do
                                {
                                        if (do_16bit) i=inw(CDi_data);
                                        else i=inb(CDi_data);
                                        j++;
                                        i=inb(CDi_status);
                                }
                                while (!(i&s_not_data_ready));
                                msg(DBG_TEA,"cmd_out_T: data response: discarded %d bytes/words.\n", j);
                                fatal_err++;
                        }
                }
                i=inb(CDi_status);
                if (!(i&s_not_result_ready))
                {
                        OUT(CDo_sel_i_d,0);
                        if (drvcmd[0]==CMDT_DISKINFO) m=l;
                        else m=0;
                        do
                        {
                                infobuf[m++]=inb(CDi_info);
                                i=inb(CDi_status);
                        }
                        while (!(i&s_not_result_ready));
                        for (j=0;j<m;j++) sprintf(&msgbuf[j*3]," %02X",infobuf[j]);
                        msgbuf[j*3]=0;
                        msg(DBG_CMD,"cmd_out_T info response:%s\n", msgbuf);
                        if (drvcmd[0]==CMDT_DISKINFO)
                        {
                                infobuf[0]=infobuf[l];
                                if (infobuf[0]!=0x02) return (l); /* data length */
                        }
                        else if (infobuf[0]!=0x02) return (m); /* info length */
                        do
                        {
                                ++recursion;
                                if (recursion>1) msg(DBG_TEA,"cmd_out_T READ_ERR recursion (%02X): %d !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n", drvcmd[0], recursion);
                                clr_cmdbuf();
                                drvcmd[0]=CMDT_READ_ERR;
                                j=cmd_out_T(); /* !!! recursive here !!! */
                                --recursion;
                                sbp_sleep(1);
                        }
                        while (j<0);
                        D_S[d].error_state=infobuf[2];
                        D_S[d].b3=infobuf[3];
                        D_S[d].b4=infobuf[4];
                        if (D_S[d].f_drv_error)
                        {
                                D_S[d].f_drv_error=0;
                                cc_DriveReset();
                                D_S[d].error_state=2;
                        }
                        return (-D_S[d].error_state-400);
                }
                if (drvcmd[0]==CMDT_READ) return (0); /* handled elsewhere */
                if ((teac==0)||(ntries<(CMDT_TRIES-5))) sbp_sleep(HZ/10);
                else sbp_sleep(HZ/100);
                if (ntries>(CMDT_TRIES-50)) continue;
                msg(DBG_TEA,"cmd_out_T: next CMDT_TRIES (%02X): %d.\n", drvcmd[0], ntries-1);
        }
        D_S[d].f_drv_error=1;
        cc_DriveReset();
        D_S[d].error_state=2;
        return (-99);
}
/*==========================================================================*/
static int cmd_out(void)
{
        int i=0;
        
        if (famT_drive) return(cmd_out_T());
        
        if (flags_cmd_out&f_putcmd)
        { 
                unsigned long flags;
                for (i=0;i<7;i++)
                        sprintf(&msgbuf[i*3], " %02X", drvcmd[i]);
                msgbuf[i*3]=0;
                msg(DBG_CMD,"cmd_out:%s\n", msgbuf);
                save_flags(flags); cli();
                for (i=0;i<7;i++) OUT(CDo_command,drvcmd[i]);
                restore_flags(flags);
        }
        if (response_count!=0)
        {
                if (cmd_type!=0)
                {
                        if (sbpro_type==1) OUT(CDo_sel_i_d,1);
                        msg(DBG_INF,"misleaded to try ResponseData.\n");
                        if (sbpro_type==1) OUT(CDo_sel_i_d,0);
                        return (-22);
                }
                else i=ResponseInfo();
                if (i<0) return (i);
        }
        if (D_S[d].in_SpinUp) msg(DBG_SPI,"in_SpinUp: to CDi_stat_loop.\n");
        if (flags_cmd_out&f_lopsta)
        {
                i=CDi_stat_loop();
                if ((i<0)||!(i&s_attention)) return (-8);
        }
        if (!(flags_cmd_out&f_getsta)) goto LOC_229;
        
 LOC_228:
        if (D_S[d].in_SpinUp) msg(DBG_SPI,"in_SpinUp: to cc_ReadStatus.\n");
        cc_ReadStatus();
        
 LOC_229:
        if (flags_cmd_out&f_ResponseStatus) 
        {
                if (D_S[d].in_SpinUp) msg(DBG_SPI,"in_SpinUp: to ResponseStatus.\n");
                i=ResponseStatus();
                /* builds status_bits, returns orig. status or p_busy_new */
                if (i<0) return (i);
                if (flags_cmd_out&(f_bit1|f_wait_if_busy))
                {
                        if (!st_check)
                        {
                                if ((flags_cmd_out&f_bit1)&&(i&p_success)) goto LOC_232;
                                if ((!(flags_cmd_out&f_wait_if_busy))||(!st_busy)) goto LOC_228;
                        }
                }
        }
 LOC_232:
        if (!(flags_cmd_out&f_obey_p_check)) return (0);
        if (!st_check) return (0);
        if (D_S[d].in_SpinUp) msg(DBG_SPI,"in_SpinUp: to cc_ReadError.\n");
        i=cc_ReadError();
        if (D_S[d].in_SpinUp) msg(DBG_SPI,"in_SpinUp: to cmd_out OK.\n");
        msg(DBG_000,"cmd_out: cc_ReadError=%d\n", i);
        return (i);
}
/*==========================================================================*/
static int cc_Seek(u_int pos, char f_blk_msf)
{
        int i;
        
  clr_cmdbuf();
        if (f_blk_msf>1) return (-3);
        if (fam0V_drive)
        {
                drvcmd[0]=CMD0_SEEK;
                if (f_blk_msf==1) pos=msf2blk(pos);
                drvcmd[2]=(pos>>16)&0x00FF;
                drvcmd[3]=(pos>>8)&0x00FF;
                drvcmd[4]=pos&0x00FF;
                if (fam0_drive)
                  flags_cmd_out = f_putcmd | f_respo2 | f_lopsta | f_getsta |
                        f_ResponseStatus | f_obey_p_check | f_bit1;
                else
                  flags_cmd_out = f_putcmd;
        }
        else if (fam1L_drive)
        {
                drvcmd[0]=CMD1_SEEK; /* same as CMD1_ and CMDL_ */
                if (f_blk_msf==0) pos=blk2msf(pos);
                drvcmd[1]=(pos>>16)&0x00FF;
                drvcmd[2]=(pos>>8)&0x00FF;
                drvcmd[3]=pos&0x00FF;
                if (famL_drive)
                        flags_cmd_out=f_putcmd|f_respo2|f_lopsta|f_getsta|f_ResponseStatus|f_obey_p_check|f_bit1;
                else
                        flags_cmd_out=f_putcmd|f_respo2|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_SEEK;
                if (f_blk_msf==0) pos=blk2msf(pos);
                drvcmd[2]=(pos>>24)&0x00FF;
                drvcmd[3]=(pos>>16)&0x00FF;
                drvcmd[4]=(pos>>8)&0x00FF;
                drvcmd[5]=pos&0x00FF;
                flags_cmd_out=f_putcmd|f_ResponseStatus;
        }
        else if (famT_drive)
        {
                drvcmd[0]=CMDT_SEEK;
                if (f_blk_msf==1) pos=msf2blk(pos);
                drvcmd[2]=(pos>>24)&0x00FF;
                drvcmd[3]=(pos>>16)&0x00FF;
                drvcmd[4]=(pos>>8)&0x00FF;
                drvcmd[5]=pos&0x00FF;
                D_S[d].n_bytes=1;
        }
        response_count=0;
        i=cmd_out();
        return (i);
}
/*==========================================================================*/
static int cc_SpinUp(void)
{
        int i;
        
        msg(DBG_SPI,"SpinUp.\n");
        D_S[d].in_SpinUp = 1;
        clr_cmdbuf();
        if (fam0LV_drive)
        {
                drvcmd[0]=CMD0_SPINUP;
                if (fam0L_drive)
                  flags_cmd_out=f_putcmd|f_respo2|f_lopsta|f_getsta|
                    f_ResponseStatus|f_obey_p_check|f_bit1;
                else
                  flags_cmd_out=f_putcmd;
        }
        else if (fam1_drive)
        {
                drvcmd[0]=CMD1_SPINUP;
                flags_cmd_out=f_putcmd|f_respo2|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_TRAY_CTL;
                drvcmd[4]=0x01; /* "spinup" */
                flags_cmd_out=f_putcmd|f_respo2|f_ResponseStatus|f_obey_p_check;
        }
        else if (famT_drive)
        {
                drvcmd[0]=CMDT_TRAY_CTL;
                drvcmd[4]=0x03; /* "insert", it hopefully spins the drive up */
        }
        response_count=0;
        i=cmd_out();
        D_S[d].in_SpinUp = 0;
        return (i);
}
/*==========================================================================*/
static int cc_SpinDown(void)
{
        int i;
        
        if (fam0_drive) return (0);
        clr_cmdbuf();
        response_count=0;
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_SPINDOWN;
                flags_cmd_out=f_putcmd|f_respo2|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_TRAY_CTL;
                drvcmd[4]=0x02; /* "eject" */
                flags_cmd_out=f_putcmd|f_ResponseStatus;
        }
        else if (famL_drive)
        {
                drvcmd[0]=CMDL_SPINDOWN;
                drvcmd[1]=1;
                flags_cmd_out=f_putcmd|f_respo2|f_lopsta|f_getsta|f_ResponseStatus|f_obey_p_check|f_bit1;
        }
        else if (famV_drive)
        {
                drvcmd[0]=CMDV_SPINDOWN;
                flags_cmd_out=f_putcmd;
        }
        else if (famT_drive)
        {
                drvcmd[0]=CMDT_TRAY_CTL;
                drvcmd[4]=0x02; /* "eject" */
        }
        i=cmd_out();
        return (i);
}
/*==========================================================================*/
static int cc_get_mode_T(void)
{
        int i;
        
        clr_cmdbuf();
        response_count=10;
        drvcmd[0]=CMDT_GETMODE;
        drvcmd[4]=response_count;
        i=cmd_out_T();
        return (i);
}
/*==========================================================================*/
static int cc_set_mode_T(void)
{
        int i;
        
        clr_cmdbuf();
        response_count=1;
        drvcmd[0]=CMDT_SETMODE;
        drvcmd[1]=D_S[d].speed_byte;
        drvcmd[2]=D_S[d].frmsiz>>8;
        drvcmd[3]=D_S[d].frmsiz&0x0FF;
        drvcmd[4]=D_S[d].f_XA; /* 1: XA */
        drvcmd[5]=D_S[d].type_byte; /* 0, 1, 3 */
        drvcmd[6]=D_S[d].mode_xb_6;
        drvcmd[7]=D_S[d].mode_yb_7|D_S[d].volume_control;
        drvcmd[8]=D_S[d].mode_xb_8;
        drvcmd[9]=D_S[d].delay;
        i=cmd_out_T();
        return (i);
}
/*==========================================================================*/
static int cc_prep_mode_T(void)
{
        int i, j;
        
        i=cc_get_mode_T();
        if (i<0) return (i);
        for (i=0;i<10;i++)
                sprintf(&msgbuf[i*3], " %02X", infobuf[i]);
        msgbuf[i*3]=0;
        msg(DBG_TEA,"CMDT_GETMODE:%s\n", msgbuf);
        D_S[d].speed_byte=0x02; /* 0x02: auto quad, 0x82: quad, 0x81: double, 0x80: single */
        D_S[d].frmsiz=make16(infobuf[2],infobuf[3]);
        D_S[d].f_XA=infobuf[4];
        if (D_S[d].f_XA==0) D_S[d].type_byte=0;
        else D_S[d].type_byte=1;
        D_S[d].mode_xb_6=infobuf[6];
        D_S[d].mode_yb_7=1;
        D_S[d].mode_xb_8=infobuf[8];
        D_S[d].delay=0; /* 0, 1, 2, 3 */
        j=cc_set_mode_T();
        i=cc_get_mode_T();
        for (i=0;i<10;i++)
                sprintf(&msgbuf[i*3], " %02X", infobuf[i]);
        msgbuf[i*3]=0;
        msg(DBG_TEA,"CMDT_GETMODE:%s\n", msgbuf);
        return (j);
}
/*==========================================================================*/
static int cc_SetSpeed(u_char speed, u_char x1, u_char x2)
{
        int i;
        
        if (fam0LV_drive) return (0);
        clr_cmdbuf();
        response_count=0;
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_SETMODE;
                drvcmd[1]=0x03;
                drvcmd[2]=speed;
                drvcmd[3]=x1;
                drvcmd[4]=x2;
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_SETSPEED;
                if (speed&speed_auto)
                {
                        drvcmd[2]=0xFF;
                        drvcmd[3]=0xFF;
                }
                else
                {
                        drvcmd[2]=0;
                        drvcmd[3]=150;
                }
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (famT_drive)
        {
                return (0);
        }
        i=cmd_out();
        return (i);
}
/*==========================================================================*/
static int cc_SetVolume(void)
{
        int i;
        u_char channel0,channel1,volume0,volume1;
        u_char control0,value0,control1,value1;
        
        D_S[d].diskstate_flags &= ~volume_bit;
        clr_cmdbuf();
        channel0=D_S[d].vol_chan0;
        volume0=D_S[d].vol_ctrl0;
        channel1=control1=D_S[d].vol_chan1;
        volume1=value1=D_S[d].vol_ctrl1;
        control0=value0=0;
        
        if (famV_drive) return (0);

        if (((D_S[d].drv_options&audio_mono)!=0)&&(D_S[d].drv_type>=drv_211))
        {
                if ((volume0!=0)&&(volume1==0))
                {
                        volume1=volume0;
                        channel1=channel0;
                }
                else if ((volume0==0)&&(volume1!=0))
                {
                        volume0=volume1;
                        channel0=channel1;
                }
        }
        if (channel0>1)
        {
                channel0=0;
                volume0=0;
        }
        if (channel1>1)
        {
                channel1=1;
                volume1=0;
        }
        
        if (fam1_drive)
        {
                control0=channel0+1;
                control1=channel1+1;
                value0=(volume0>volume1)?volume0:volume1;
                value1=value0;
                if (volume0==0) control0=0;
                if (volume1==0) control1=0;
                drvcmd[0]=CMD1_SETMODE;
                drvcmd[1]=0x05;
                drvcmd[3]=control0;
                drvcmd[4]=value0;
                drvcmd[5]=control1;
                drvcmd[6]=value1;
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                control0=channel0+1;
                control1=channel1+1;
                value0=(volume0>volume1)?volume0:volume1;
                value1=value0;
                if (volume0==0) control0=0;
                if (volume1==0) control1=0;
                drvcmd[0]=CMD2_SETMODE;
                drvcmd[1]=0x0E;
                drvcmd[3]=control0;
                drvcmd[4]=value0;
                drvcmd[5]=control1;
                drvcmd[6]=value1;
                flags_cmd_out=f_putcmd|f_ResponseStatus;
        }
        else if (famL_drive)
        {
                if ((volume0==0)||(channel0!=0)) control0 |= 0x80;
                if ((volume1==0)||(channel1!=1)) control0 |= 0x40;
                if (volume0|volume1) value0=0x80;
                drvcmd[0]=CMDL_SETMODE;
                drvcmd[1]=0x03;
                drvcmd[4]=control0;
                drvcmd[5]=value0;
                flags_cmd_out=f_putcmd|f_lopsta|f_getsta|f_ResponseStatus|f_obey_p_check|f_bit1;
        }
        else if (fam0_drive) /* different firmware levels */
        {
                if (D_S[d].drv_type>=drv_300)
                {
                        control0=volume0&0xFC;
                        value0=volume1&0xFC;
                        if ((volume0!=0)&&(volume0<4)) control0 |= 0x04;
                        if ((volume1!=0)&&(volume1<4)) value0 |= 0x04;
                        if (channel0!=0) control0 |= 0x01;
                        if (channel1==1) value0 |= 0x01;
                }
                else
                {
                        value0=(volume0>volume1)?volume0:volume1;
                        if (D_S[d].drv_type<drv_211)
                        {
                                if (channel0!=0)
                                {
                                        i=channel1;
                                        channel1=channel0;
                                        channel0=i;
                                        i=volume1;
                                        volume1=volume0;
                                        volume0=i;
                                }
                                if (channel0==channel1)
                                {
                                        if (channel0==0)
                                        {
                                                channel1=1;
                                                volume1=0;
                                                volume0=value0;
                                        }
                                        else
                                        {
                                                channel0=0;
                                                volume0=0;
                                                volume1=value0;
                                        }
                                }
                        }
                        
                        if ((volume0!=0)&&(volume1!=0))
                        {
                                if (volume0==0xFF) volume1=0xFF;
                                else if (volume1==0xFF) volume0=0xFF;
                        }
                        else if (D_S[d].drv_type<drv_201) volume0=volume1=value0;
                        
                        if (D_S[d].drv_type>=drv_201)
                        {
                                if (volume0==0) control0 |= 0x80;
                                if (volume1==0) control0 |= 0x40;
                        }
                        if (D_S[d].drv_type>=drv_211)
                        {
                                if (channel0!=0) control0 |= 0x20;
                                if (channel1!=1) control0 |= 0x10;
                        }
                }
                drvcmd[0]=CMD0_SETMODE;
                drvcmd[1]=0x83;
                drvcmd[4]=control0;
                drvcmd[5]=value0;
                flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
        }
        else if (famT_drive)
        {
                D_S[d].volume_control=0;
                if (!volume0) D_S[d].volume_control|=0x10;
                if (!volume1) D_S[d].volume_control|=0x20;
                i=cc_prep_mode_T();
                if (i<0) return (i);
        }
        if (!famT_drive)
        {
                response_count=0;
                i=cmd_out();
                if (i<0) return (i);
        }
        D_S[d].diskstate_flags |= volume_bit;
        return (0);
}
/*==========================================================================*/
static int GetStatus(void)
{
        int i;
        
        if (famT_drive) return (0);
        flags_cmd_out=f_getsta|f_ResponseStatus|f_obey_p_check;
        response_count=0;
        cmd_type=0;
        i=cmd_out();
        return (i);
}
/*==========================================================================*/
static int cc_DriveReset(void)
{
        int i;
        
        msg(DBG_RES,"cc_DriveReset called.\n");
        clr_cmdbuf();

        response_count=0;
        if (fam0LV_drive) OUT(CDo_reset,0x00);
        else if (fam1_drive)
        {
                drvcmd[0]=CMD1_RESET;
                flags_cmd_out=f_putcmd;
                i=cmd_out();
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_RESET;
                flags_cmd_out=f_putcmd;
                i=cmd_out();
                OUT(CDo_reset,0x00);
        }
        else if (famT_drive)
        {
                OUT(CDo_sel_i_d,0);
                OUT(CDo_enable,D_S[d].drv_sel);
                OUT(CDo_command,CMDT_RESET);
                for (i=1;i<10;i++) OUT(CDo_command,0);
        }
        if (fam0LV_drive) sbp_sleep(5*HZ); /* wait 5 seconds */
        else sbp_sleep(1*HZ); /* wait a second */
#if 1
        if (famT_drive)
        {
                msg(DBG_TEA, "================CMDT_RESET given=================.\n");
                sbp_sleep(3*HZ);
        }
#endif /* 1 */ 
        flush_status();
        i=GetStatus();
        if (i<0) return i;
        if (!famT_drive)
                if (D_S[d].error_byte!=aud_12) return -501;
        return (0);
}

/*==========================================================================*/
static int SetSpeed(void)
{
        int i, speed;
        
        if (!(D_S[d].drv_options&(speed_auto|speed_300|speed_150))) return (0);
        speed=speed_auto;
        if (!(D_S[d].drv_options&speed_auto))
        {
                speed |= speed_300;
                if (!(D_S[d].drv_options&speed_300)) speed=0;
        }
        i=cc_SetSpeed(speed,0,0);
        return (i);
}

static void switch_drive(int i);

static int sbpcd_select_speed(struct cdrom_device_info *cdi, int speed)
{
  int i = MINOR(cdi->dev);

  if (i != d)
    switch_drive(i);

  return cc_SetSpeed(speed == 2 ? speed_300 : speed_150, 0, 0);
}

/*==========================================================================*/
static int DriveReset(void)
{
        int i;
        
        i=cc_DriveReset();
        if (i<0) return (-22);
        do
        {
                i=GetStatus();
                if ((i<0)&&(i!=-ERR_DISKCHANGE)) {
                        return (-2); /* from sta2err */
                }
                if (!st_caddy_in) break;
                sbp_sleep(1);
        }
        while (!st_diskok);
#if 000
        D_S[d].CD_changed=1;
#endif
        if ((st_door_closed) && (st_caddy_in))
        {
                i=DiskInfo();
                if (i<0) return (-23);
        }
        return (0);
}

static int sbpcd_reset(struct cdrom_device_info *cdi)
{
  int i = MINOR(cdi->dev);

  if (i != d)
    switch_drive(i);

  return DriveReset();
}

/*==========================================================================*/
static int cc_PlayAudio(int pos_audio_start,int pos_audio_end)
{
        int i, j, n;
        
        if (D_S[d].audio_state==audio_playing) return (-EINVAL);
        clr_cmdbuf();
        response_count=0;
        if (famLV_drive)
        {
                drvcmd[0]=CMDL_PLAY;
                i=msf2blk(pos_audio_start);
                n=msf2blk(pos_audio_end)+1-i;
                drvcmd[1]=(i>>16)&0x00FF;
                drvcmd[2]=(i>>8)&0x00FF;
                drvcmd[3]=i&0x00FF;
                drvcmd[4]=(n>>16)&0x00FF;
                drvcmd[5]=(n>>8)&0x00FF;
                drvcmd[6]=n&0x00FF;
                if (famL_drive)
                flags_cmd_out = f_putcmd | f_respo2 | f_lopsta | f_getsta |
                        f_ResponseStatus | f_obey_p_check | f_wait_if_busy;
                else
                  flags_cmd_out = f_putcmd;
        }
        else
        {
                j=1;
                if (fam1_drive)
                {
                        drvcmd[0]=CMD1_PLAY_MSF;
                        flags_cmd_out = f_putcmd | f_respo2 | f_ResponseStatus |
                                f_obey_p_check | f_wait_if_busy;
                }
                else if (fam2_drive)
                {
                        drvcmd[0]=CMD2_PLAY_MSF;
                        flags_cmd_out = f_putcmd | f_ResponseStatus | f_obey_p_check;
                }
                else if (famT_drive)
                {
                        drvcmd[0]=CMDT_PLAY_MSF;
                        j=3;
                        response_count=1;
                }
                else if (fam0_drive)
                {
                        drvcmd[0]=CMD0_PLAY_MSF;
                        flags_cmd_out = f_putcmd | f_respo2 | f_lopsta | f_getsta |
                                f_ResponseStatus | f_obey_p_check | f_wait_if_busy;
                }
                drvcmd[j]=(pos_audio_start>>16)&0x00FF;
                drvcmd[j+1]=(pos_audio_start>>8)&0x00FF;
                drvcmd[j+2]=pos_audio_start&0x00FF;
                drvcmd[j+3]=(pos_audio_end>>16)&0x00FF;
                drvcmd[j+4]=(pos_audio_end>>8)&0x00FF;
                drvcmd[j+5]=pos_audio_end&0x00FF;
        }
        i=cmd_out();
        return (i);
}
/*==========================================================================*/
static int cc_Pause_Resume(int pau_res)
{
        int i;
        
        clr_cmdbuf();
        response_count=0;
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_PAU_RES;
                if (pau_res!=1) drvcmd[1]=0x80;
                flags_cmd_out=f_putcmd|f_respo2|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_PAU_RES;
                if (pau_res!=1) drvcmd[2]=0x01;
                flags_cmd_out=f_putcmd|f_ResponseStatus;
        }
        else if (fam0LV_drive)
        {
                drvcmd[0]=CMD0_PAU_RES;
                if (pau_res!=1) drvcmd[1]=0x80;
                if (famL_drive)
                        flags_cmd_out=f_putcmd|f_respo2|f_lopsta|f_getsta|f_ResponseStatus|
                                f_obey_p_check|f_bit1;
                else if (famV_drive)
                  flags_cmd_out=f_putcmd;
                else
                        flags_cmd_out=f_putcmd|f_respo2|f_lopsta|f_getsta|f_ResponseStatus|
                                f_obey_p_check;
        }
        else if (famT_drive)
        {
                if (pau_res==3) return (cc_PlayAudio(D_S[d].pos_audio_start,D_S[d].pos_audio_end));
                else if (pau_res==1) drvcmd[0]=CMDT_PAUSE;
                else return (-56);
        }
        i=cmd_out();
        return (i);
}
/*==========================================================================*/
static int cc_LockDoor(char lock)
{
        int i;
        
        if (fam0_drive) return (0);
        msg(DBG_LCK,"cc_LockDoor: %d (drive %d)\n", lock, d);
        msg(DBG_LCS,"p_door_locked bit %d before\n", st_door_locked);
        clr_cmdbuf();
        response_count=0;
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_LOCK_CTL;
                if (lock==1) drvcmd[1]=0x01;
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_LOCK_CTL;
                if (lock==1) drvcmd[4]=0x01;
                flags_cmd_out=f_putcmd|f_ResponseStatus;
        }
        else if (famLV_drive)
        {
                drvcmd[0]=CMDL_LOCK_CTL;
                if (lock==1) drvcmd[1]=0x01;
                if (famL_drive)
                  flags_cmd_out=f_putcmd|f_respo2|f_lopsta|f_getsta|f_ResponseStatus|f_obey_p_check|f_bit1;
                else
                  flags_cmd_out=f_putcmd;
        }
        else if (famT_drive)
        {
                drvcmd[0]=CMDT_LOCK_CTL;
                if (lock==1) drvcmd[4]=0x01;
        }
        i=cmd_out();
        msg(DBG_LCS,"p_door_locked bit %d after\n", st_door_locked);
        return (i);
}
/*==========================================================================*/
/*==========================================================================*/
static int UnLockDoor(void)
{
        int i,j;
        
        j=20;
        do
        {
                i=cc_LockDoor(0);
                --j;
                sbp_sleep(1);
        }
        while ((i<0)&&(j));
        if (i<0)
        {
                cc_DriveReset();
                return -84;
        }
        return (0);
}
/*==========================================================================*/
static int LockDoor(void)
{
        int i,j;
        
        j=20;
        do
        {
                i=cc_LockDoor(1);
                --j;
                sbp_sleep(1);
        }
        while ((i<0)&&(j));
        if (j==0)
        {               
                cc_DriveReset();
                j=20;
                do
                {
                        i=cc_LockDoor(1);
                        --j;
                        sbp_sleep(1);
                }
                while ((i<0)&&(j));
        }
        return (i);
}

static int sbpcd_lock_door(struct cdrom_device_info *cdi, int lock)
{
  return lock ? LockDoor() : UnLockDoor();
}

/*==========================================================================*/
static int cc_CloseTray(void)
{
        int i;
        
        if (fam0_drive) return (0);
        msg(DBG_LCK,"cc_CloseTray (drive %d)\n", d);
        msg(DBG_LCS,"p_door_closed bit %d before\n", st_door_closed);
        
        clr_cmdbuf();
        response_count=0;
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_TRAY_CTL;
                flags_cmd_out=f_putcmd|f_respo2|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_TRAY_CTL;
                drvcmd[1]=0x01;
                drvcmd[4]=0x03; /* "insert" */
                flags_cmd_out=f_putcmd|f_ResponseStatus;
        }
        else if (famLV_drive)
        {
                drvcmd[0]=CMDL_TRAY_CTL;
                if (famLV_drive)
                  flags_cmd_out=f_putcmd|f_respo2|f_lopsta|f_getsta|
                        f_ResponseStatus|f_obey_p_check|f_bit1;
                else
                  flags_cmd_out=f_putcmd;
        }
        else if (famT_drive)
        {
                drvcmd[0]=CMDT_TRAY_CTL;
                drvcmd[4]=0x03; /* "insert" */
        }
        i=cmd_out();
        msg(DBG_LCS,"p_door_closed bit %d after\n", st_door_closed);

        i=cc_ReadError();
        flags_cmd_out |= f_respo2;
        cc_ReadStatus(); /* command: give 1-byte status */
        i=ResponseStatus();
        if (famT_drive&&(i<0))
        {
                cc_DriveReset();
                i=ResponseStatus();
#if 0
                sbp_sleep(HZ);
#endif /* 0 */ 
                i=ResponseStatus();
        }
        if (i<0)
        {
                msg(DBG_INF,"sbpcd cc_CloseTray: ResponseStatus timed out (%d).\n",i);
        }
        if (!(famT_drive))
        {
                if (!st_spinning)
                {
                        cc_SpinUp();
                        if (st_check) i=cc_ReadError();
                        flags_cmd_out |= f_respo2;
                        cc_ReadStatus();
                        i=ResponseStatus();
                } else {
                }
        }
        i=DiskInfo();
        return (i);
}

static int sbpcd_tray_move(struct cdrom_device_info *cdi, int position)
{
        int i;
        int retval=0;
        i = MINOR(cdi->dev);
        switch_drive(i);
        /* DUH! --AJK */
        if(D_S[d].CD_changed != 0xFF) {
                D_S[d].CD_changed=0xFF;
                D_S[d].diskstate_flags &= ~cd_size_bit;
        }
        if (position == 1) {
                cc_SpinDown();
        } else {
                retval=cc_CloseTray();
        }
  return retval;
}

/*==========================================================================*/
static int cc_ReadSubQ(void)
{
        int i,j;

        D_S[d].diskstate_flags &= ~subq_bit;
        for (j=255;j>0;j--)
        {
                clr_cmdbuf();
                if (fam1_drive)
                {
                        drvcmd[0]=CMD1_READSUBQ;
                        flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
                        response_count=11;
                }
                else if (fam2_drive)
                {
                        drvcmd[0]=CMD2_READSUBQ;
                        drvcmd[1]=0x02;
                        drvcmd[3]=0x01;
                        flags_cmd_out=f_putcmd;
                        response_count=10;
                }
                else if (fam0LV_drive)
                {
                        drvcmd[0]=CMD0_READSUBQ;
                        drvcmd[1]=0x02;
                        if (famLV_drive)
                                flags_cmd_out=f_putcmd;
                        else
                                flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
                        response_count=13;
                }
                else if (famT_drive)
                {
                        response_count=12;
                        drvcmd[0]=CMDT_READSUBQ;
                        drvcmd[1]=0x02;
                        drvcmd[2]=0x40;
                        drvcmd[3]=0x01;
                        drvcmd[8]=response_count;
                }
                i=cmd_out();
                if (i<0) return (i);
                for (i=0;i<response_count;i++)
                {
                        sprintf(&msgbuf[i*3], " %02X", infobuf[i]);
                        msgbuf[i*3]=0;
                        msg(DBG_SQ1,"cc_ReadSubQ:%s\n", msgbuf);
                }
                if (famT_drive) break;
                if (infobuf[0]!=0) break;
                if ((!st_spinning) || (j==1))
                {
                        D_S[d].SubQ_ctl_adr=D_S[d].SubQ_trk=D_S[d].SubQ_pnt_idx=D_S[d].SubQ_whatisthis=0;
                        D_S[d].SubQ_run_tot=D_S[d].SubQ_run_trk=0;
                        return (0);
                }
        }
        if (famT_drive) D_S[d].SubQ_ctl_adr=infobuf[1];
        else D_S[d].SubQ_ctl_adr=swap_nibbles(infobuf[1]);
        D_S[d].SubQ_trk=byt2bcd(infobuf[2]);
        D_S[d].SubQ_pnt_idx=byt2bcd(infobuf[3]);
        if (fam0LV_drive) i=5;
        else if (fam12_drive) i=4;
        else if (famT_drive) i=8;
        D_S[d].SubQ_run_tot=make32(make16(0,infobuf[i]),make16(infobuf[i+1],infobuf[i+2])); /* msf-bin */
        i=7;
        if (fam0LV_drive) i=9;
        else if (fam12_drive) i=7;
        else if (famT_drive) i=4;
        D_S[d].SubQ_run_trk=make32(make16(0,infobuf[i]),make16(infobuf[i+1],infobuf[i+2])); /* msf-bin */
        D_S[d].SubQ_whatisthis=infobuf[i+3];
        D_S[d].diskstate_flags |= subq_bit;
        return (0);
}
/*==========================================================================*/
static int cc_ModeSense(void)
{
        int i;
        
        if (fam2_drive) return (0);
        if (famV_drive) return (0);
        D_S[d].diskstate_flags &= ~frame_size_bit;
        clr_cmdbuf();
        if (fam1_drive)
        {
                response_count=5;
                drvcmd[0]=CMD1_GETMODE;
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam0L_drive)
        {
                response_count=2;
                drvcmd[0]=CMD0_GETMODE;
                if (famL_drive) flags_cmd_out=f_putcmd;
                else flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
        }
        else if (famT_drive)
        {
                response_count=10;
                drvcmd[0]=CMDT_GETMODE;
                drvcmd[4]=response_count;
        }
        i=cmd_out();
        if (i<0) return (i);
        i=0;
        D_S[d].sense_byte=0;
        if (fam1_drive) D_S[d].sense_byte=infobuf[i++];
        else if (famT_drive)
        {
                if (infobuf[4]==0x01) D_S[d].xa_byte=0x20;
                else D_S[d].xa_byte=0;
                i=2;
        }
        D_S[d].frame_size=make16(infobuf[i],infobuf[i+1]);
        for (i=0;i<response_count;i++)
                sprintf(&msgbuf[i*3], " %02X", infobuf[i]);
        msgbuf[i*3]=0;
        msg(DBG_XA1,"cc_ModeSense:%s\n", msgbuf);
        
        D_S[d].diskstate_flags |= frame_size_bit;
        return (0);
}
/*==========================================================================*/
/*==========================================================================*/
static int cc_ModeSelect(int framesize)
{
        int i;
        
        if (fam2_drive) return (0);
        if (famV_drive) return (0);
        D_S[d].diskstate_flags &= ~frame_size_bit;
        clr_cmdbuf();
        D_S[d].frame_size=framesize;
        if (framesize==CD_FRAMESIZE_RAW) D_S[d].sense_byte=0x82;
        else D_S[d].sense_byte=0x00;
        
        msg(DBG_XA1,"cc_ModeSelect: %02X %04X\n",
            D_S[d].sense_byte, D_S[d].frame_size);
        
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_SETMODE;
                drvcmd[1]=0x00;
                drvcmd[2]=D_S[d].sense_byte;
                drvcmd[3]=(D_S[d].frame_size>>8)&0xFF;
                drvcmd[4]=D_S[d].frame_size&0xFF;
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam0L_drive)
        {
                drvcmd[0]=CMD0_SETMODE;
                drvcmd[1]=0x00;
                drvcmd[2]=(D_S[d].frame_size>>8)&0xFF;
                drvcmd[3]=D_S[d].frame_size&0xFF;
                drvcmd[4]=0x00;
                if(famL_drive)
                        flags_cmd_out=f_putcmd|f_lopsta|f_getsta|f_ResponseStatus|f_obey_p_check;
                else
                        flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
        }
        else if (famT_drive)
        {
                return (-1);
        }
        response_count=0;
        i=cmd_out();
        if (i<0) return (i);
        D_S[d].diskstate_flags |= frame_size_bit;
        return (0);
}
/*==========================================================================*/
static int cc_GetVolume(void)
{
        int i;
        u_char switches;
        u_char chan0=0;
        u_char vol0=0;
        u_char chan1=1;
        u_char vol1=0;
        
        if (famV_drive) return (0);
        D_S[d].diskstate_flags &= ~volume_bit;
        clr_cmdbuf();
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_GETMODE;
                drvcmd[1]=0x05;
                response_count=5;
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                drvcmd[0]=CMD2_GETMODE;
                drvcmd[1]=0x0E;
                response_count=5;
                flags_cmd_out=f_putcmd;
        }
        else if (fam0L_drive)
        {
                drvcmd[0]=CMD0_GETMODE;
                drvcmd[1]=0x03;
                response_count=2;
                if(famL_drive)
                        flags_cmd_out=f_putcmd;
                else
                        flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
        }
        else if (famT_drive)
        {
                i=cc_get_mode_T();
                if (i<0) return (i);
        }
        if (!famT_drive)
        {
                i=cmd_out();
                if (i<0) return (i);
        }
        if (fam1_drive)
        {
                chan0=infobuf[1]&0x0F;
                vol0=infobuf[2];
                chan1=infobuf[3]&0x0F;
                vol1=infobuf[4];
                if (chan0==0)
                {
                        chan0=1;
                        vol0=0;
                }
                if (chan1==0)
                {
                        chan1=2;
                        vol1=0;
                }
                chan0 >>= 1;
                chan1 >>= 1;
        }
        else if (fam2_drive)
        {
                chan0=infobuf[1];
                vol0=infobuf[2];
                chan1=infobuf[3];
                vol1=infobuf[4];
        }
        else if (famL_drive)
        {
                chan0=0;
                chan1=1;
                vol0=vol1=infobuf[1];
                switches=infobuf[0];
                if ((switches&0x80)!=0) chan0=1;
                if ((switches&0x40)!=0) chan1=0;
        }
        else if (fam0_drive) /* different firmware levels */
        {
                chan0=0;
                chan1=1;
                vol0=vol1=infobuf[1];
                if (D_S[d].drv_type>=drv_201)
                {
                        if (D_S[d].drv_type<drv_300)
                        {
                                switches=infobuf[0];
                                if ((switches&0x80)!=0) vol0=0;
                                if ((switches&0x40)!=0) vol1=0;
                                if (D_S[d].drv_type>=drv_211)
                                {
                                        if ((switches&0x20)!=0) chan0=1;
                                        if ((switches&0x10)!=0) chan1=0;
                                }
                        }
                        else
                        {
                                vol0=infobuf[0];
                                if ((vol0&0x01)!=0) chan0=1;
                                if ((vol1&0x01)==0) chan1=0;
                                vol0 &= 0xFC;
                                vol1 &= 0xFC;
                                if (vol0!=0) vol0 += 3;
                                if (vol1!=0) vol1 += 3;
                        }
                }
        }
        else if (famT_drive)
        {
                D_S[d].volume_control=infobuf[7];
                chan0=0;
                chan1=1;
                if (D_S[d].volume_control&0x10) vol0=0;
                else vol0=0xff;
                if (D_S[d].volume_control&0x20) vol1=0;
                else vol1=0xff;
        }
        D_S[d].vol_chan0=chan0;
        D_S[d].vol_ctrl0=vol0;
        D_S[d].vol_chan1=chan1;
        D_S[d].vol_ctrl1=vol1;
#if 000
        D_S[d].vol_chan2=2;
        D_S[d].vol_ctrl2=0xFF;
        D_S[d].vol_chan3=3;
        D_S[d].vol_ctrl3=0xFF;
#endif /*  000 */
        D_S[d].diskstate_flags |= volume_bit;
        return (0);
}
/*==========================================================================*/
static int cc_ReadCapacity(void)
{
        int i, j;
        
        if (fam2_drive) return (0); /* some firmware lacks this command */
        if (famLV_drive) return (0); /* some firmware lacks this command */
        if (famT_drive) return (0); /* done with cc_ReadTocDescr() */
        D_S[d].diskstate_flags &= ~cd_size_bit;
        for (j=3;j>0;j--)
        {
                clr_cmdbuf();
                if (fam1_drive)
                {
                        drvcmd[0]=CMD1_CAPACITY;
                        response_count=5;
                        flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
                }
#if 00
                else if (fam2_drive)
                {
                        drvcmd[0]=CMD2_CAPACITY;
                        response_count=8;
                        flags_cmd_out=f_putcmd;
                }
#endif
                else if (fam0_drive)
                {
                        drvcmd[0]=CMD0_CAPACITY;
                        response_count=5;
                        flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
                }
                i=cmd_out();
                if (i>=0) break;
                msg(DBG_000,"cc_ReadCapacity: cmd_out: err %d\n", i);
                cc_ReadError();
        }
        if (j==0) return (i);
        if (fam1_drive) D_S[d].CDsize_frm=msf2blk(make32(make16(0,infobuf[0]),make16(infobuf[1],infobuf[2])))+CD_MSF_OFFSET;
        else if (fam0_drive) D_S[d].CDsize_frm=make32(make16(0,infobuf[0]),make16(infobuf[1],infobuf[2]));
#if 00
        else if (fam2_drive) D_S[d].CDsize_frm=make32(make16(infobuf[0],infobuf[1]),make16(infobuf[2],infobuf[3]));
#endif
        D_S[d].diskstate_flags |= cd_size_bit;
        msg(DBG_000,"cc_ReadCapacity: %d frames.\n", D_S[d].CDsize_frm);
        return (0);
}
/*==========================================================================*/
static int cc_ReadTocDescr(void)
{
        int i;
        
        D_S[d].diskstate_flags &= ~toc_bit;
        clr_cmdbuf();
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_DISKINFO;
                response_count=6;
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam0LV_drive)
        {
                drvcmd[0]=CMD0_DISKINFO;
                response_count=6;
                if(famLV_drive)
                        flags_cmd_out=f_putcmd;
                else
                        flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                /* possibly longer timeout periods necessary */
                D_S[d].f_multisession=0;
                drvcmd[0]=CMD2_DISKINFO;
                drvcmd[1]=0x02;
                drvcmd[2]=0xAB;
                drvcmd[3]=0xFF; /* session */
                response_count=8;
                flags_cmd_out=f_putcmd;
        }
        else if (famT_drive)
        {
                D_S[d].f_multisession=0;
                response_count=12;
                drvcmd[0]=CMDT_DISKINFO;
                drvcmd[1]=0x02;
                drvcmd[6]=CDROM_LEADOUT;
                drvcmd[8]=response_count;
                drvcmd[9]=0x00;
        }
        i=cmd_out();
        if (i<0) return (i);
        if ((famT_drive)&&(i<response_count)) return (-100-i);
        if ((fam1_drive)||(fam2_drive)||(fam0LV_drive))
                D_S[d].xa_byte=infobuf[0];
        if (fam2_drive)
        {
                D_S[d].first_session=infobuf[1];
                D_S[d].last_session=infobuf[2];
                D_S[d].n_first_track=infobuf[3];
                D_S[d].n_last_track=infobuf[4];
                if (D_S[d].first_session!=D_S[d].last_session)
                {
                        D_S[d].f_multisession=1;
                        D_S[d].lba_multi=msf2blk(make32(make16(0,infobuf[5]),make16(infobuf[6],infobuf[7])));
                }
#if 0
                if (D_S[d].first_session!=D_S[d].last_session)
                {
                        if (D_S[d].last_session<=20)
                                zwanzig=D_S[d].last_session+1;
                        else zwanzig=20;
                        for (count=D_S[d].first_session;count<zwanzig;count++)
                        {
                                drvcmd[0]=CMD2_DISKINFO;
                                drvcmd[1]=0x02;
                                drvcmd[2]=0xAB;
                                drvcmd[3]=count;
                                response_count=8;
                                flags_cmd_out=f_putcmd;
                                i=cmd_out();
                                if (i<0) return (i);
                                D_S[d].msf_multi_n[count]=make32(make16(0,infobuf[5]),make16(infobuf[6],infobuf[7]));
                        }
                        D_S[d].diskstate_flags |= multisession_bit;
                }
#endif
                drvcmd[0]=CMD2_DISKINFO;
                drvcmd[1]=0x02;
                drvcmd[2]=0xAA;
                drvcmd[3]=0xFF;
                response_count=5;
                flags_cmd_out=f_putcmd;
                i=cmd_out();
                if (i<0) return (i);
                D_S[d].size_msf=make32(make16(0,infobuf[2]),make16(infobuf[3],infobuf[4]));
                D_S[d].size_blk=msf2blk(D_S[d].size_msf);
                D_S[d].CDsize_frm=D_S[d].size_blk+1;
        }
        else if (famT_drive)
        {
                D_S[d].size_msf=make32(make16(infobuf[8],infobuf[9]),make16(infobuf[10],infobuf[11]));
                D_S[d].size_blk=msf2blk(D_S[d].size_msf);
                D_S[d].CDsize_frm=D_S[d].size_blk+1;
                D_S[d].n_first_track=infobuf[2];
                D_S[d].n_last_track=infobuf[3];
        }
        else
        {
                D_S[d].n_first_track=infobuf[1];
                D_S[d].n_last_track=infobuf[2];
                D_S[d].size_msf=make32(make16(0,infobuf[3]),make16(infobuf[4],infobuf[5]));
                D_S[d].size_blk=msf2blk(D_S[d].size_msf);
                if (famLV_drive) D_S[d].CDsize_frm=D_S[d].size_blk+1;
        }
        D_S[d].diskstate_flags |= toc_bit;
        msg(DBG_TOC,"TocDesc: xa %02X firstt %02X lastt %02X size %08X firstses %02X lastsess %02X\n",
            D_S[d].xa_byte,
            D_S[d].n_first_track,
            D_S[d].n_last_track,
            D_S[d].size_msf,
            D_S[d].first_session,
            D_S[d].last_session);
        return (0);
}
/*==========================================================================*/
static int cc_ReadTocEntry(int num)
{
        int i;
        
        clr_cmdbuf();
        if (fam1_drive)
        {
                drvcmd[0]=CMD1_READTOC;
                drvcmd[2]=num;
                response_count=8;
                flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
        }
        else if (fam2_drive)
        {
                /* possibly longer timeout periods necessary */
                drvcmd[0]=CMD2_DISKINFO;
                drvcmd[1]=0x02;
                drvcmd[2]=num;
                response_count=5;
                flags_cmd_out=f_putcmd;
        }
        else if (fam0LV_drive)
        {
                drvcmd[0]=CMD0_READTOC;
                drvcmd[1]=0x02;
                drvcmd[2]=num;
                response_count=8;
                if (famLV_drive)
                        flags_cmd_out=f_putcmd;
                else
                  flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
        }
        else if (famT_drive)
        {
                response_count=12;
                drvcmd[0]=CMDT_DISKINFO;
                drvcmd[1]=0x02;
                drvcmd[6]=num;
                drvcmd[8]=response_count;
                drvcmd[9]=0x00;
        }
        i=cmd_out();
        if (i<0) return (i);
        if ((famT_drive)&&(i<response_count)) return (-100-i);
        if ((fam1_drive)||(fam0LV_drive))
        {
                D_S[d].TocEnt_nixbyte=infobuf[0];
                i=1;
        }
        else if (fam2_drive) i=0;
        else if (famT_drive) i=5;
        D_S[d].TocEnt_ctl_adr=swap_nibbles(infobuf[i++]);
        if ((fam1_drive)||(fam0L_drive))
        {
                D_S[d].TocEnt_number=infobuf[i++];
                D_S[d].TocEnt_format=infobuf[i];
        }
        else
          {
            D_S[d].TocEnt_number=num;
            D_S[d].TocEnt_format=0;
          }
        if (fam1_drive) i=4;
        else if (fam0LV_drive) i=5;
        else if (fam2_drive) i=2;
        else if (famT_drive) i=9;
        D_S[d].TocEnt_address=make32(make16(0,infobuf[i]),
                                     make16(infobuf[i+1],infobuf[i+2]));
        for (i=0;i<response_count;i++)
                sprintf(&msgbuf[i*3], " %02X", infobuf[i]);
        msgbuf[i*3]=0;
        msg(DBG_ECS,"TocEntry:%s\n", msgbuf);
        msg(DBG_TOC,"TocEntry: %02X %02X %02X %02X %08X\n",
            D_S[d].TocEnt_nixbyte, D_S[d].TocEnt_ctl_adr,
            D_S[d].TocEnt_number, D_S[d].TocEnt_format,
            D_S[d].TocEnt_address);
        return (0);
}
/*==========================================================================*/
static int cc_ReadPacket(void)
{
        int i;
        
        clr_cmdbuf();
        drvcmd[0]=CMD0_PACKET;
        drvcmd[1]=response_count;
        if(famL_drive) flags_cmd_out=f_putcmd;
        else if (fam01_drive)
                flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
        else if (fam2_drive) return (-1); /* not implemented yet */
        else if (famT_drive)
        {
                return (-1);
        }
        i=cmd_out();
        return (i);
}
/*==========================================================================*/
static int convert_UPC(u_char *p)
{
        int i;
        
        p++;
        if (fam0L_drive) p[13]=0;
        for (i=0;i<7;i++)
        {
                if (fam1_drive) D_S[d].UPC_buf[i]=swap_nibbles(*p++);
                else if (fam0L_drive)
                {
                        D_S[d].UPC_buf[i]=((*p++)<<4)&0xFF;
                        D_S[d].UPC_buf[i] |= *p++;
                }
                else if (famT_drive)
                {
                        return (-1);
                }
                else /* CD200 */
                {
                        return (-1);
                }
        }
        D_S[d].UPC_buf[6] &= 0xF0;
        return (0);
}
/*==========================================================================*/
static int cc_ReadUPC(void)
{
        int i;
#if TEST_UPC
        int block, checksum;
#endif /* TEST_UPC */ 
        
        if (fam2_drive) return (0); /* not implemented yet */
        if (famT_drive) return (0); /* not implemented yet */