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-/*
- * 1.00 Oct 31, 1994 -- Initial version.
- * 1.01 Nov 2, 1994 -- Fixed problem with starting request in
- * cdrom_check_status.
- * 1.03 Nov 25, 1994 -- leaving unmask_intr[] as a user-setting (as for disks)
- * (from mlord) -- minor changes to cdrom_setup()
- * -- renamed ide_dev_s to ide_drive_t, enable irq on command
- * 2.00 Nov 27, 1994 -- Generalize packet command interface;
- * add audio ioctls.
- * 2.01 Dec 3, 1994 -- Rework packet command interface to handle devices
- * which send an interrupt when ready for a command.
- * 2.02 Dec 11, 1994 -- Cache the TOC in the driver.
- * Don't use SCMD_PLAYAUDIO_TI; it's not included
- * in the current version of ATAPI.
- * Try to use LBA instead of track or MSF addressing
- * when possible.
- * Don't wait for READY_STAT.
- * 2.03 Jan 10, 1995 -- Rewrite block read routines to handle block sizes
- * other than 2k and to move multiple sectors in a
- * single transaction.
- * 2.04 Apr 21, 1995 -- Add work-around for Creative Labs CD220E drives.
- * Thanks to Nick Saw <cwsaw@pts7.pts.mot.com> for
- * help in figuring this out. Ditto for Acer and
- * Aztech drives, which seem to have the same problem.
- * 2.04b May 30, 1995 -- Fix to match changes in ide.c version 3.16 -ml
- * 2.05 Jun 8, 1995 -- Don't attempt to retry after an illegal request
- * or data protect error.
- * Use HWIF and DEV_HWIF macros as in ide.c.
- * Always try to do a request_sense after
- * a failed command.
- * Include an option to give textual descriptions
- * of ATAPI errors.
- * Fix a bug in handling the sector cache which
- * showed up if the drive returned data in 512 byte
- * blocks (like Pioneer drives). Thanks to
- * Richard Hirst <srh@gpt.co.uk> for diagnosing this.
- * Properly supply the page number field in the
- * MODE_SELECT command.
- * PLAYAUDIO12 is broken on the Aztech; work around it.
- * 2.05x Aug 11, 1995 -- lots of data structure renaming/restructuring in ide.c
- * (my apologies to Scott, but now ide-cd.c is independent)
- * 3.00 Aug 22, 1995 -- Implement CDROMMULTISESSION ioctl.
- * Implement CDROMREADAUDIO ioctl (UNTESTED).
- * Use input_ide_data() and output_ide_data().
- * Add door locking.
- * Fix usage count leak in cdrom_open, which happened
- * when a read-write mount was attempted.
- * Try to load the disk on open.
- * Implement CDROMEJECT_SW ioctl (off by default).
- * Read total cdrom capacity during open.
- * Rearrange logic in cdrom_decode_status. Issue
- * request sense commands for failed packet commands
- * from here instead of from cdrom_queue_packet_command.
- * Fix a race condition in retrieving error information.
- * Suppress printing normal unit attention errors and
- * some drive not ready errors.
- * Implement CDROMVOLREAD ioctl.
- * Implement CDROMREADMODE1/2 ioctls.
- * Fix race condition in setting up interrupt handlers
- * when the `serialize' option is used.
- * 3.01 Sep 2, 1995 -- Fix ordering of reenabling interrupts in
- * cdrom_queue_request.
- * Another try at using ide_[input,output]_data.
- * 3.02 Sep 16, 1995 -- Stick total disk capacity in partition table as well.
- * Make VERBOSE_IDE_CD_ERRORS dump failed command again.
- * Dump out more information for ILLEGAL REQUEST errs.
- * Fix handling of errors occurring before the
- * packet command is transferred.
- * Fix transfers with odd bytelengths.
- * 3.03 Oct 27, 1995 -- Some Creative drives have an id of just `CD'.
- * `DCI-2S10' drives are broken too.
- * 3.04 Nov 20, 1995 -- So are Vertos drives.
- * 3.05 Dec 1, 1995 -- Changes to go with overhaul of ide.c and ide-tape.c
- * 3.06 Dec 16, 1995 -- Add support needed for partitions.
- * More workarounds for Vertos bugs (based on patches
- * from Holger Dietze <dietze@aix520.informatik.uni-leipzig.de>).
- * Try to eliminate byteorder assumptions.
- * Use atapi_cdrom_subchnl struct definition.
- * Add STANDARD_ATAPI compilation option.
- * 3.07 Jan 29, 1996 -- More twiddling for broken drives: Sony 55D,
- * Vertos 300.
- * Add NO_DOOR_LOCKING configuration option.
- * Handle drive_cmd requests w/NULL args (for hdparm -t).
- * Work around sporadic Sony55e audio play problem.
- * 3.07a Feb 11, 1996 -- check drive->id for NULL before dereferencing, to fix
- * problem with "hde=cdrom" with no drive present. -ml
- * 3.08 Mar 6, 1996 -- More Vertos workarounds.
- * 3.09 Apr 5, 1996 -- Add CDROMCLOSETRAY ioctl.
- * Switch to using MSF addressing for audio commands.
- * Reformat to match kernel tabbing style.
- * Add CDROM_GET_UPC ioctl.
- * 3.10 Apr 10, 1996 -- Fix compilation error with STANDARD_ATAPI.
- * 3.11 Apr 29, 1996 -- Patch from Heiko Eißfeldt <heiko@colossus.escape.de>
- * to remove redundant verify_area calls.
- * 3.12 May 7, 1996 -- Rudimentary changer support. Based on patches
- * from Gerhard Zuber <zuber@berlin.snafu.de>.
- * Let open succeed even if there's no loaded disc.
- * 3.13 May 19, 1996 -- Fixes for changer code.
- * 3.14 May 29, 1996 -- Add work-around for Vertos 600.
- * (From Hennus Bergman <hennus@sky.ow.nl>.)
- * 3.15 July 2, 1996 -- Added support for Sanyo 3 CD changers
- * from Ben Galliart <bgallia@luc.edu> with
- * special help from Jeff Lightfoot
- * <jeffml@pobox.com>
- * 3.15a July 9, 1996 -- Improved Sanyo 3 CD changer identification
- * 3.16 Jul 28, 1996 -- Fix from Gadi to reduce kernel stack usage for ioctl.
- * 3.17 Sep 17, 1996 -- Tweak audio reads for some drives.
- * Start changing CDROMLOADFROMSLOT to CDROM_SELECT_DISC.
- * 3.18 Oct 31, 1996 -- Added module and DMA support.
- *
- * 4.00 Nov 5, 1996 -- New ide-cd maintainer,
- * Erik B. Andersen <andersee@debian.org>
- * -- Newer Creative drives don't always set the error
- * register correctly. Make sure we see media changes
- * regardless.
- * -- Integrate with generic cdrom driver.
- * -- CDROMGETSPINDOWN and CDROMSETSPINDOWN ioctls, based on
- * a patch from Ciro Cattuto <>.
- * -- Call set_device_ro.
- * -- Implement CDROMMECHANISMSTATUS and CDROMSLOTTABLE
- * ioctls, based on patch by Erik Andersen
- * -- Add some probes of drive capability during setup.
- *
- * 4.01 Nov 11, 1996 -- Split into ide-cd.c and ide-cd.h
- * -- Removed CDROMMECHANISMSTATUS and CDROMSLOTTABLE
- * ioctls in favor of a generalized approach
- * using the generic cdrom driver.
- * -- Fully integrated with the 2.1.X kernel.
- * -- Other stuff that I forgot (lots of changes)
- *
- * 4.02 Dec 01, 1996 -- Applied patch from Gadi Oxman <gadio@netvision.net.il>
- * to fix the drive door locking problems.
- *
- * 4.03 Dec 04, 1996 -- Added DSC overlap support.
- * 4.04 Dec 29, 1996 -- Added CDROMREADRAW ioclt based on patch
- * by Ales Makarov (xmakarov@sun.felk.cvut.cz)
- *
- * 4.05 Nov 20, 1997 -- Modified to print more drive info on init
- * Minor other changes
- * Fix errors on CDROMSTOP (If you have a "Dolphin",
- * you must define IHAVEADOLPHIN)
- * Added identifier so new Sanyo CD-changer works
- * Better detection if door locking isn't supported
- *
- * 4.06 Dec 17, 1997 -- fixed endless "tray open" messages -ml
- * 4.07 Dec 17, 1997 -- fallback to set pc->stat on "tray open"
- * 4.08 Dec 18, 1997 -- spew less noise when tray is empty
- * -- fix speed display for ACER 24X, 18X
- * 4.09 Jan 04, 1998 -- fix handling of the last block so we return
- * an end of file instead of an I/O error (Gadi)
- * 4.10 Jan 24, 1998 -- fixed a bug so now changers can change to a new
- * slot when there is no disc in the current slot.
- * -- Fixed a memory leak where info->changer_info was
- * malloc'ed but never free'd when closing the device.
- * -- Cleaned up the global namespace a bit by making more
- * functions static that should already have been.
- * 4.11 Mar 12, 1998 -- Added support for the CDROM_SELECT_SPEED ioctl
- * based on a patch for 2.0.33 by Jelle Foks
- * <jelle@scintilla.utwente.nl>, a patch for 2.0.33
- * by Toni Giorgino <toni@pcape2.pi.infn.it>, the SCSI
- * version, and my own efforts. -erik
- * -- Fixed a stupid bug which egcs was kind enough to
- * inform me of where "Illegal mode for this track"
- * was never returned due to a comparison on data
- * types of limited range.
- * 4.12 Mar 29, 1998 -- Fixed bug in CDROM_SELECT_SPEED so write speed is
- * now set ionly for CD-R and CD-RW drives. I had
- * removed this support because it produced errors.
- * It produced errors _only_ for non-writers. duh.
- * 4.13 May 05, 1998 -- Suppress useless "in progress of becoming ready"
- * messages, since this is not an error.
- * -- Change error messages to be const
- * -- Remove a "\t" which looks ugly in the syslogs
- * 4.14 July 17, 1998 -- Change to pointing to .ps version of ATAPI spec
- * since the .pdf version doesn't seem to work...
- * -- Updated the TODO list to something more current.
- *
- * 4.15 Aug 25, 1998 -- Updated ide-cd.h to respect machine endianness,
- * patch thanks to "Eddie C. Dost" <ecd@skynet.be>
- *
- * 4.50 Oct 19, 1998 -- New maintainers!
- * Jens Axboe <axboe@image.dk>
- * Chris Zwilling <chris@cloudnet.com>
- *
- * 4.51 Dec 23, 1998 -- Jens Axboe <axboe@image.dk>
- * - ide_cdrom_reset enabled since the ide subsystem
- * handles resets fine now. <axboe@image.dk>
- * - Transfer size fix for Samsung CD-ROMs, thanks to
- * "Ville Hallik" <ville.hallik@mail.ee>.
- * - other minor stuff.
- *
- * 4.52 Jan 19, 1999 -- Jens Axboe <axboe@image.dk>
- * - Detect DVD-ROM/RAM drives
- *
- * 4.53 Feb 22, 1999 - Include other model Samsung and one Goldstar
- * drive in transfer size limit.
- * - Fix the I/O error when doing eject without a medium
- * loaded on some drives.
- * - CDROMREADMODE2 is now implemented through
- * CDROMREADRAW, since many drives don't support
- * MODE2 (even though ATAPI 2.6 says they must).
- * - Added ignore parameter to ide-cd (as a module), eg
- * insmod ide-cd ignore='hda hdb'
- * Useful when using ide-cd in conjunction with
- * ide-scsi. TODO: non-modular way of doing the
- * same.
- *
- * 4.54 Aug 5, 1999 - Support for MMC2 class commands through the generic
- * packet interface to cdrom.c.
- * - Unified audio ioctl support, most of it.
- * - cleaned up various deprecated verify_area().
- * - Added ide_cdrom_packet() as the interface for
- * the Uniform generic_packet().
- * - bunch of other stuff, will fill in logs later.
- * - report 1 slot for non-changers, like the other
- * cd-rom drivers. don't report select disc for
- * non-changers as well.
- * - mask out audio playing, if the device can't do it.
- *
- * 4.55 Sep 1, 1999 - Eliminated the rest of the audio ioctls, except
- * for CDROMREADTOC[ENTRY|HEADER]. Some of the drivers
- * use this independently of the actual audio handling.
- * They will disappear later when I get the time to
- * do it cleanly.
- * - Minimize the TOC reading - only do it when we
- * know a media change has occurred.
- * - Moved all the CDROMREADx ioctls to the Uniform layer.
- * - Heiko Eißfeldt <heiko@colossus.escape.de> supplied
- * some fixes for CDI.
- * - CD-ROM leaving door locked fix from Andries
- * Brouwer <Andries.Brouwer@cwi.nl>
- * - Erik Andersen <andersen@xmission.com> unified
- * commands across the various drivers and how
- * sense errors are handled.
- *
- * 4.56 Sep 12, 1999 - Removed changer support - it is now in the
- * Uniform layer.
- * - Added partition based multisession handling.
- * - Mode sense and mode select moved to the
- * Uniform layer.
- * - Fixed a problem with WPI CDS-32X drive - it
- * failed the capabilities
- *
- * 4.57 Apr 7, 2000 - Fixed sense reporting.
- * - Fixed possible oops in ide_cdrom_get_last_session()
- * - Fix locking mania and make ide_cdrom_reset relock
- * - Stop spewing errors to log when magicdev polls with
- * TEST_UNIT_READY on some drives.
- * - Various fixes from Tobias Ringstrom:
- * tray if it was locked prior to the reset.
- * - cdrom_read_capacity returns one frame too little.
- * - Fix real capacity reporting.
- *
- * 4.58 May 1, 2000 - Clean up ACER50 stuff.
- * - Fix small problem with ide_cdrom_capacity
- *
- * 4.59 Aug 11, 2000 - Fix changer problem in cdrom_read_toc, we weren't
- * correctly sensing a disc change.
- * - Rearranged some code
- * - Use extended sense on drives that support it for
- * correctly reporting tray status -- from
- * Michael D Johnson <johnsom@orst.edu>
- * 4.60 Dec 17, 2003 - Add mt rainier support
- * - Bump timeout for packet commands, matches sr
- * - Odd stuff
- * 4.61 Jan 22, 2004 - support hardware sector sizes other than 2kB,
- * Pascal Schmidt <der.eremit@email.de>
- */