[GitHub/mt8127/android_kernel_alcatel_ttab.git] / Documentation / ide / ChangeLog.ide-cd.1994-2004

/*
 * 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>
 */
Commit	Line	Data
03553353 BZ	1	/*
	2	* 1.00 Oct 31, 1994 -- Initial version.
	3	* 1.01 Nov 2, 1994 -- Fixed problem with starting request in
	4	* cdrom_check_status.
	5	* 1.03 Nov 25, 1994 -- leaving unmask_intr[] as a user-setting (as for disks)
	6	* (from mlord) -- minor changes to cdrom_setup()
	7	* -- renamed ide_dev_s to ide_drive_t, enable irq on command
	8	* 2.00 Nov 27, 1994 -- Generalize packet command interface;
	9	* add audio ioctls.
	10	* 2.01 Dec 3, 1994 -- Rework packet command interface to handle devices
	11	* which send an interrupt when ready for a command.
	12	* 2.02 Dec 11, 1994 -- Cache the TOC in the driver.
	13	* Don't use SCMD_PLAYAUDIO_TI; it's not included
	14	* in the current version of ATAPI.
	15	* Try to use LBA instead of track or MSF addressing
	16	* when possible.
	17	* Don't wait for READY_STAT.
	18	* 2.03 Jan 10, 1995 -- Rewrite block read routines to handle block sizes
	19	* other than 2k and to move multiple sectors in a
	20	* single transaction.
	21	* 2.04 Apr 21, 1995 -- Add work-around for Creative Labs CD220E drives.
	22	* Thanks to Nick Saw <cwsaw@pts7.pts.mot.com> for
	23	* help in figuring this out. Ditto for Acer and
	24	* Aztech drives, which seem to have the same problem.
	25	* 2.04b May 30, 1995 -- Fix to match changes in ide.c version 3.16 -ml
	26	* 2.05 Jun 8, 1995 -- Don't attempt to retry after an illegal request
	27	* or data protect error.
	28	* Use HWIF and DEV_HWIF macros as in ide.c.
	29	* Always try to do a request_sense after
	30	* a failed command.
	31	* Include an option to give textual descriptions
	32	* of ATAPI errors.
	33	* Fix a bug in handling the sector cache which
	34	* showed up if the drive returned data in 512 byte
	35	* blocks (like Pioneer drives). Thanks to
	36	* Richard Hirst <srh@gpt.co.uk> for diagnosing this.
	37	* Properly supply the page number field in the
	38	* MODE_SELECT command.
	39	* PLAYAUDIO12 is broken on the Aztech; work around it.
	40	* 2.05x Aug 11, 1995 -- lots of data structure renaming/restructuring in ide.c
	41	* (my apologies to Scott, but now ide-cd.c is independent)
	42	* 3.00 Aug 22, 1995 -- Implement CDROMMULTISESSION ioctl.
	43	* Implement CDROMREADAUDIO ioctl (UNTESTED).
	44	* Use input_ide_data() and output_ide_data().
	45	* Add door locking.
	46	* Fix usage count leak in cdrom_open, which happened
	47	* when a read-write mount was attempted.
	48	* Try to load the disk on open.
	49	* Implement CDROMEJECT_SW ioctl (off by default).
	50	* Read total cdrom capacity during open.
	51	* Rearrange logic in cdrom_decode_status. Issue
	52	* request sense commands for failed packet commands
	53	* from here instead of from cdrom_queue_packet_command.
	54	* Fix a race condition in retrieving error information.
	55	* Suppress printing normal unit attention errors and
	56	* some drive not ready errors.
	57	* Implement CDROMVOLREAD ioctl.
	58	* Implement CDROMREADMODE1/2 ioctls.
	59	* Fix race condition in setting up interrupt handlers
	60	* when the `serialize' option is used.
	61	* 3.01 Sep 2, 1995 -- Fix ordering of reenabling interrupts in
	62	* cdrom_queue_request.
	63	* Another try at using ide_[input,output]_data.
	64	* 3.02 Sep 16, 1995 -- Stick total disk capacity in partition table as well.
65	* Make VERBOSE_IDE_CD_ERRORS dump failed command again.
66	* Dump out more information for ILLEGAL REQUEST errs.
67	* Fix handling of errors occurring before the
68	* packet command is transferred.
69	* Fix transfers with odd bytelengths.
70	* 3.03 Oct 27, 1995 -- Some Creative drives have an id of just `CD'.
71	* `DCI-2S10' drives are broken too.
72	* 3.04 Nov 20, 1995 -- So are Vertos drives.
73	* 3.05 Dec 1, 1995 -- Changes to go with overhaul of ide.c and ide-tape.c
74	* 3.06 Dec 16, 1995 -- Add support needed for partitions.
75	* More workarounds for Vertos bugs (based on patches
76	* from Holger Dietze <dietze@aix520.informatik.uni-leipzig.de>).
77	* Try to eliminate byteorder assumptions.
78	* Use atapi_cdrom_subchnl struct definition.
79	* Add STANDARD_ATAPI compilation option.
80	* 3.07 Jan 29, 1996 -- More twiddling for broken drives: Sony 55D,
81	* Vertos 300.
82	* Add NO_DOOR_LOCKING configuration option.
83	* Handle drive_cmd requests w/NULL args (for hdparm -t).
84	* Work around sporadic Sony55e audio play problem.
85	* 3.07a Feb 11, 1996 -- check drive->id for NULL before dereferencing, to fix
86	* problem with "hde=cdrom" with no drive present. -ml
87	* 3.08 Mar 6, 1996 -- More Vertos workarounds.
88	* 3.09 Apr 5, 1996 -- Add CDROMCLOSETRAY ioctl.
89	* Switch to using MSF addressing for audio commands.
90	* Reformat to match kernel tabbing style.
91	* Add CDROM_GET_UPC ioctl.
92	* 3.10 Apr 10, 1996 -- Fix compilation error with STANDARD_ATAPI.
93	* 3.11 Apr 29, 1996 -- Patch from Heiko Eißfeldt <heiko@colossus.escape.de>
94	* to remove redundant verify_area calls.
95	* 3.12 May 7, 1996 -- Rudimentary changer support. Based on patches
96	* from Gerhard Zuber <zuber@berlin.snafu.de>.
97	* Let open succeed even if there's no loaded disc.
98	* 3.13 May 19, 1996 -- Fixes for changer code.
99	* 3.14 May 29, 1996 -- Add work-around for Vertos 600.
100	* (From Hennus Bergman <hennus@sky.ow.nl>.)
101	* 3.15 July 2, 1996 -- Added support for Sanyo 3 CD changers
102	* from Ben Galliart <bgallia@luc.edu> with
103	* special help from Jeff Lightfoot
104	* <jeffml@pobox.com>
105	* 3.15a July 9, 1996 -- Improved Sanyo 3 CD changer identification
106	* 3.16 Jul 28, 1996 -- Fix from Gadi to reduce kernel stack usage for ioctl.
107	* 3.17 Sep 17, 1996 -- Tweak audio reads for some drives.
108	* Start changing CDROMLOADFROMSLOT to CDROM_SELECT_DISC.
109	* 3.18 Oct 31, 1996 -- Added module and DMA support.
110	*
111	* 4.00 Nov 5, 1996 -- New ide-cd maintainer,
112	* Erik B. Andersen <andersee@debian.org>
113	* -- Newer Creative drives don't always set the error
114	* register correctly. Make sure we see media changes
115	* regardless.
116	* -- Integrate with generic cdrom driver.
117	* -- CDROMGETSPINDOWN and CDROMSETSPINDOWN ioctls, based on
118	* a patch from Ciro Cattuto <>.
119	* -- Call set_device_ro.
120	* -- Implement CDROMMECHANISMSTATUS and CDROMSLOTTABLE
121	* ioctls, based on patch by Erik Andersen
122	* -- Add some probes of drive capability during setup.
123	*
124	* 4.01 Nov 11, 1996 -- Split into ide-cd.c and ide-cd.h
125	* -- Removed CDROMMECHANISMSTATUS and CDROMSLOTTABLE
126	* ioctls in favor of a generalized approach
127	* using the generic cdrom driver.
128	* -- Fully integrated with the 2.1.X kernel.
129	* -- Other stuff that I forgot (lots of changes)
130	*
131	* 4.02 Dec 01, 1996 -- Applied patch from Gadi Oxman <gadio@netvision.net.il>
132	* to fix the drive door locking problems.
133	*
134	* 4.03 Dec 04, 1996 -- Added DSC overlap support.
135	* 4.04 Dec 29, 1996 -- Added CDROMREADRAW ioclt based on patch
136	* by Ales Makarov (xmakarov@sun.felk.cvut.cz)
137	*
138	* 4.05 Nov 20, 1997 -- Modified to print more drive info on init
139	* Minor other changes
140	* Fix errors on CDROMSTOP (If you have a "Dolphin",
141	* you must define IHAVEADOLPHIN)
142	* Added identifier so new Sanyo CD-changer works
143	* Better detection if door locking isn't supported
144	*
145	* 4.06 Dec 17, 1997 -- fixed endless "tray open" messages -ml
146	* 4.07 Dec 17, 1997 -- fallback to set pc->stat on "tray open"
147	* 4.08 Dec 18, 1997 -- spew less noise when tray is empty
148	* -- fix speed display for ACER 24X, 18X
149	* 4.09 Jan 04, 1998 -- fix handling of the last block so we return
150	* an end of file instead of an I/O error (Gadi)
151	* 4.10 Jan 24, 1998 -- fixed a bug so now changers can change to a new
152	* slot when there is no disc in the current slot.
153	* -- Fixed a memory leak where info->changer_info was
154	* malloc'ed but never free'd when closing the device.
155	* -- Cleaned up the global namespace a bit by making more
156	* functions static that should already have been.
157	* 4.11 Mar 12, 1998 -- Added support for the CDROM_SELECT_SPEED ioctl
158	* based on a patch for 2.0.33 by Jelle Foks
159	* <jelle@scintilla.utwente.nl>, a patch for 2.0.33
160	* by Toni Giorgino <toni@pcape2.pi.infn.it>, the SCSI
161	* version, and my own efforts. -erik
162	* -- Fixed a stupid bug which egcs was kind enough to
163	* inform me of where "Illegal mode for this track"
164	* was never returned due to a comparison on data
165	* types of limited range.
166	* 4.12 Mar 29, 1998 -- Fixed bug in CDROM_SELECT_SPEED so write speed is
167	* now set ionly for CD-R and CD-RW drives. I had
168	* removed this support because it produced errors.
169	* It produced errors _only_ for non-writers. duh.
170	* 4.13 May 05, 1998 -- Suppress useless "in progress of becoming ready"
171	* messages, since this is not an error.
172	* -- Change error messages to be const
173	* -- Remove a "\t" which looks ugly in the syslogs
174	* 4.14 July 17, 1998 -- Change to pointing to .ps version of ATAPI spec
175	* since the .pdf version doesn't seem to work...
176	* -- Updated the TODO list to something more current.
177	*
40e47125	178	* 4.15 Aug 25, 1998 -- Updated ide-cd.h to respect machine endianness,
03553353 BZ	179	* patch thanks to "Eddie C. Dost" <ecd@skynet.be>
	180	*
	181	* 4.50 Oct 19, 1998 -- New maintainers!
	182	* Jens Axboe <axboe@image.dk>
	183	* Chris Zwilling <chris@cloudnet.com>
	184	*
	185	* 4.51 Dec 23, 1998 -- Jens Axboe <axboe@image.dk>
	186	* - ide_cdrom_reset enabled since the ide subsystem
	187	* handles resets fine now. <axboe@image.dk>
	188	* - Transfer size fix for Samsung CD-ROMs, thanks to
	189	* "Ville Hallik" <ville.hallik@mail.ee>.
	190	* - other minor stuff.
	191	*
	192	* 4.52 Jan 19, 1999 -- Jens Axboe <axboe@image.dk>
	193	* - Detect DVD-ROM/RAM drives
	194	*
	195	* 4.53 Feb 22, 1999 - Include other model Samsung and one Goldstar
	196	* drive in transfer size limit.
	197	* - Fix the I/O error when doing eject without a medium
	198	* loaded on some drives.
	199	* - CDROMREADMODE2 is now implemented through
	200	* CDROMREADRAW, since many drives don't support
	201	* MODE2 (even though ATAPI 2.6 says they must).
	202	* - Added ignore parameter to ide-cd (as a module), eg
	203	* insmod ide-cd ignore='hda hdb'
	204	* Useful when using ide-cd in conjunction with
	205	* ide-scsi. TODO: non-modular way of doing the
	206	* same.
	207	*
	208	* 4.54 Aug 5, 1999 - Support for MMC2 class commands through the generic
	209	* packet interface to cdrom.c.
	210	* - Unified audio ioctl support, most of it.
	211	* - cleaned up various deprecated verify_area().
	212	* - Added ide_cdrom_packet() as the interface for
	213	* the Uniform generic_packet().
	214	* - bunch of other stuff, will fill in logs later.
	215	* - report 1 slot for non-changers, like the other
	216	* cd-rom drivers. don't report select disc for
	217	* non-changers as well.
	218	* - mask out audio playing, if the device can't do it.
	219	*
	220	* 4.55 Sep 1, 1999 - Eliminated the rest of the audio ioctls, except
	221	* for CDROMREADTOC[ENTRY\|HEADER]. Some of the drivers
	222	* use this independently of the actual audio handling.
	223	* They will disappear later when I get the time to
	224	* do it cleanly.
	225	* - Minimize the TOC reading - only do it when we
	226	* know a media change has occurred.
	227	* - Moved all the CDROMREADx ioctls to the Uniform layer.
	228	* - Heiko Eißfeldt <heiko@colossus.escape.de> supplied
	229	* some fixes for CDI.
	230	* - CD-ROM leaving door locked fix from Andries
	231	* Brouwer <Andries.Brouwer@cwi.nl>
	232	* - Erik Andersen <andersen@xmission.com> unified
	233	* commands across the various drivers and how
	234	* sense errors are handled.
	235	*
	236	* 4.56 Sep 12, 1999 - Removed changer support - it is now in the
	237	* Uniform layer.
	238	* - Added partition based multisession handling.
	239	* - Mode sense and mode select moved to the
	240	* Uniform layer.
	241	* - Fixed a problem with WPI CDS-32X drive - it
	242	* failed the capabilities
243	*
244	* 4.57 Apr 7, 2000 - Fixed sense reporting.
245	* - Fixed possible oops in ide_cdrom_get_last_session()
246	* - Fix locking mania and make ide_cdrom_reset relock
247	* - Stop spewing errors to log when magicdev polls with
248	* TEST_UNIT_READY on some drives.
249	* - Various fixes from Tobias Ringstrom:
250	* tray if it was locked prior to the reset.
251	* - cdrom_read_capacity returns one frame too little.
252	* - Fix real capacity reporting.
253	*
254	* 4.58 May 1, 2000 - Clean up ACER50 stuff.
255	* - Fix small problem with ide_cdrom_capacity
256	*
257	* 4.59 Aug 11, 2000 - Fix changer problem in cdrom_read_toc, we weren't
258	* correctly sensing a disc change.
259	* - Rearranged some code
260	* - Use extended sense on drives that support it for
261	* correctly reporting tray status -- from
262	* Michael D Johnson <johnsom@orst.edu>
263	* 4.60 Dec 17, 2003 - Add mt rainier support
264	* - Bump timeout for packet commands, matches sr
265	* - Odd stuff
266	* 4.61 Jan 22, 2004 - support hardware sector sizes other than 2kB,
267	* Pascal Schmidt <der.eremit@email.de>
268	*/