Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 5978 insertions, 0 deletions

diff --git a/drivers/cdrom/sbpcd.c b/drivers/cdrom/sbpcd.c
new file mode 100644
index 00000000000..fc2c433f6a2
--- /dev/null
+++ b/drivers/cdrom/sbpcd.c
@@ -0,0 +1,5978 @@
+/*
+ *  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 lose any sleep in simply
+ * disallowing merging.				Paul G.  02/2001
+ *
+ * Thu May 30 14:14:47 CEST 2002:
+ *
+ * I have presumably found the reson for the above - there was a bogous
+ * end_request substitute, which was manipulating the request queues
+ * incorrectly. If someone has access to the actual hardware, and it's
+ * still operations - well  please free to test it.
+ *
+ * Marcin Dalecki
+ */
+
+/*
+ * Add bio/kdev_t changes for 2.5.x required to make it work again. 
+ * Still room for improvement in the request handling here if anyone
+ * actually cares.  Bring your own chainsaw.    Paul G.  02/2002
+ */
+
+
+#include <linux/module.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"
+
+#define MAJOR_NR MATSUSHITA_CDROM_MAJOR
+#include <linux/blkdev.h>
+
+/*==========================================================================*/
+#if SBPCD_DIS_IRQ
+# define SBPCD_CLI cli()
+# define SBPCD_STI sti()
+#else
+# define SBPCD_CLI
+# define SBPCD_STI
+#endif
+
+/*==========================================================================*/
+/*
+ * 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.
+ */
+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 */
+};
+
+/*
+ * Protects access to global structures etc.
+ */
+static  __cacheline_aligned DEFINE_SPINLOCK(sbpcd_lock);
+static struct request_queue *sbpcd_queue;
+
+MODULE_PARM(sbpcd, "2i");
+MODULE_PARM(max_drives, "i");
+
+#define NUM_PROBE  (sizeof(sbpcd) / sizeof(int))
+
+/*==========================================================================*/
+
+#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);
+
+/*==========================================================================*/
+
+/*
+ * 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;
+static const char *major_name="sbpcd";
+
+/*==========================================================================*/
+
+#ifdef 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};
+
+/*==========================================================================*/
+/*
+ * drive space begins here (needed separate for each unit) 
+ */
+static struct sbpcd_drive {
+	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;
+#ifdef 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;
+	struct gendisk *disk;
+} D_S[NR_SBPCD];
+
+static struct sbpcd_drive *current_drive = D_S;
+
+/*
+ * 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 =
+		TIMER_INITIALIZER(mark_timeout_delay, 0, 0);
+static struct timer_list data_timer =
+		TIMER_INITIALIZER(mark_timeout_data, 0, 0);
+#if 0
+static struct timer_list audio_timer =
+		TIMER_INITIALIZER(mark_timeout_audio, 0, 0);
+#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, current_drive - D_S, 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=