IDE updates part #3

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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 <[email protected]> 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 <[email protected]> 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 <[email protected]>).
+ *                       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 <[email protected]>
+ *                       to remove redundant verify_area calls.
+ * 3.12  May  7, 1996 -- Rudimentary changer support.  Based on patches
+ *                        from Gerhard Zuber <[email protected]>.
+ *                       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 <[email protected]>.)
+ * 3.15  July 2, 1996 -- Added support for Sanyo 3 CD changers
+ *                        from Ben Galliart <[email protected]> with
+ *                        special help from Jeff Lightfoot
+ *                        <[email protected]>
+ * 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 <[email protected]>
+ *                     -- 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 <[email protected]>
+ *                          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 ([email protected])
+ *
+ * 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
+ *                         <[email protected]>, a patch for 2.0.33
+ *                         by Toni Giorgino <[email protected]>, 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 mechine endianess,
+ *                         patch thanks to "Eddie C. Dost" <[email protected]>
+ *
+ * 4.50  Oct 19, 1998  -- New maintainers!
+ *                         Jens Axboe <[email protected]>
+ *                         Chris Zwilling <[email protected]>
+ *
+ * 4.51  Dec 23, 1998  -- Jens Axboe <[email protected]>
+ *                      - ide_cdrom_reset enabled since the ide subsystem
+ *                         handles resets fine now. <[email protected]>
+ *                      - Transfer size fix for Samsung CD-ROMs, thanks to
+ *                        "Ville Hallik" <[email protected]>.
+ *                      - other minor stuff.
+ *
+ * 4.52  Jan 19, 1999  -- Jens Axboe <[email protected]>
+ *                      - 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 <[email protected]> supplied
+ *			  some fixes for CDI.
+ *			- CD-ROM leaving door locked fix from Andries
+ *			  Brouwer <[email protected]>
+ *			- Erik Andersen <[email protected]> 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 <[email protected]>
+ * 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 <[email protected]>
+ */

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index 0d2da89..a4a4323 100644
@@ -40,8 +40,10 @@ obj-$(CONFIG_BLK_DEV_IDEPNP)		+= ide-pnp.o
 obj-$(CONFIG_IDE_H8300)			+= h8300/
 obj-$(CONFIG_IDE_GENERIC)		+= ide-generic.o
 
+ide-cd_mod-y += ide-cd.o ide-cd_ioctl.o ide-cd_verbose.o
+
 obj-$(CONFIG_BLK_DEV_IDEDISK)		+= ide-disk.o
-obj-$(CONFIG_BLK_DEV_IDECD)		+= ide-cd.o
+obj-$(CONFIG_BLK_DEV_IDECD)		+= ide-cd_mod.o
 obj-$(CONFIG_BLK_DEV_IDETAPE)		+= ide-tape.o
 obj-$(CONFIG_BLK_DEV_IDEFLOPPY)		+= ide-floppy.o