Reported-by: NStefan Bader <stefan.bader@canonical.com>
Signed-off-by: NBorislav Petkov <petkovbb@gmail.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This patch fixes the missing residual count setting in DMA mode,
which was introduced during the conversion to blk-end-request.
The residual count could be used by the request submitter.
So if it isn't set correctly, some upper layers does not work.
(e.g. wodim for CD burning.)

The bug is in only DMA mode.
In PIO mode, we are setting the residual count correctly,
so no need to fix.
Signed-off-by: NKiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: NJun'ichi Nomura <j-nomura@ce.jp.nec.com>
Reported-by: NAndreas Schwab <schwab@suse.de>
Tested-by: NAndreas Schwab <schwab@suse.de>
Tested-by: NLaura Garcia <nevola@gmail.com>
Tested-by: NBorislav Petkov <petkovbb@googlemail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NBorislav Petkov <petkovbb@gmail.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Also, move xfer_func_t typedef to the ide.h since it is used by two drivers
now (more coming).

Bart:
- use __func__ while at it
Signed-off-by: NBorislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

The last years stuff and a trip down memory lane...
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

There should be no functional changes from this.
Signed-off-by: NBorislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Bump driver version.

* Remove filename and stale TODO from comments.

* Add my copyrights.
Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add 'rw' parameter to cdrom_read_check_ireason(), make it handle
both read and write checking, rename it to ide_cd_check_ireason(),
finally remove no longer needed cdrom_write_check_ireason().

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add handling of fs read/write requests to cdrom_nepwc_intr()
and remove no longer needed cdrom_rw_intr().

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

In cdrom_newpc_intr():
* cleanup variables in the 'transfer data' loop

In cdrom_rw_intr():
* rename 'sectors_to_transfer' to 'thislen'
* rename 'this_transfer' to 'blen'
* keep number of bytes (instead of sectors) in 'thislen' and 'blen'
* call 'xferfunc' only once for 'blen'
* cache 'rq->buffer' in 'ptr' variable
* check for 'rq->bio' before setting 'ptr' and 'blen'
* check for 'ptr' instead of 'rq->current_nr_sectors'

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Use the fact that for the first loop rq->current_nr_sectors is always
set and unify moving to the next buffer for read/write requests.

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add handling of read requests to cdrom_start_write(), rename it
to cdrom_start_rw() and remove no longer needed cdrom_start_read().

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Add handling of write requests to cdrom_start_read_continuation(),
  rename it to cdrom_start_rw_cont() and remove no longer needed
  cdrom_start_write_cont().

* Remove redundant '(rq->sector & (sectors_per_frame - 1)' check.

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add handling of read requests to cdrom_write_intr(), rename it
to cdrom_rw_intr() and remove no longer needed cdrom_read_intr().

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This is a preparation for cdrom_read_intr() and cdrom_write_intr() merge.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add ide_cd_drain_data() and use it in cdrom_{buffer_sectors,read_intr}()
(as a nice side-effect this cuts 0.5kB of code from ide-cd.o).

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add REQ_TYPE_{SENSE,ATA_PC} requests handling to cdrom_do_block_pc()
and remove cdrom_do_packet_command().

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

cdrom_do_pc_continuation() is now identical to cdrom_do_newpc_cont()
so just always use the latter function.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add handling of REQ_TYPE_{SENSE,ATA_PC} requests to cdrom_newpc_intr()
(please note that these requests never have 'bio' attached to them
and they never use DMA), then remove no longer needed cdrom_pc_intr().

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This is a preparation for cdrom_pc_intr() and cdrom_newpc_intr() merge.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This is a preparation for cdrom_pc_intr() and cdrom_newpc_intr() merge.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

There is no need for it anylonger and ide_set_handler() complains
if ->handler is not NULL anyway.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* cdrom_prepare_request() -> ide_cd_init_rq()
* cdrom_queue_packet_command() -> ide_cd_queue_pc()
* cdrom_lockdoor() -> ide_cd_lockdoor()
* cdrom_read_toc() -> ide_cd_read_toc()
* cdrom_get_toc_entry() -> ide_cd_get_toc_entry()

This is a preparation to move code handling cdrom.c IOCTLs out of ide-cd.c.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This is a preparation to move code handling cdrom.c IOCTLs out of ide-cd.c.
Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Move lba_to_msf() and msf_to_lba() to <linux/cdrom.h>
  (use 'u8' type instead of 'byte' while at it).

* Remove msf_to_lba() copy from drivers/cdrom/cdrom.c.
Acked-by: NJens Axboe <jens.axboe@oracle.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Rename ide-cd kernel module to ide-cd_mod in preparation to moving code out
  from ide-cd.[c,h].   Add MODULE_ALIAS("ide-cd") to preserve compatibility.

* Move VERBOSE_IDE_CD_ERRORS code from ide-cd.[c,h] to ide-cd_verbose.c.

  ide-cd_verbose.c is IDE subsystem independent and may be easily converted
  into generic library usable by other drivers (i.e. libata) if needed.

* Add CONFIG_BLK_DEV_IDECD_VERBOSE_ERRORS config option to drivers/ide/Kconfig
  replacing VERBOSE_IDE_CD_ERRORS define.  Make this config option enabled by
  default and visible only if CONFIG_EMBEDDED is defined.

before the patch:
   text    data     bss     dec     hex filename
  22841     360    1056   24257    5ec1 drivers/ide/ide-cd.o

after the patch w/ CONFIG_BLK_DEV_IDECD_VERBOSE_ERRORS=y:
   text    data     bss     dec     hex filename
  22857     360    1056   24273    5ed1 drivers/ide/ide-cd_mod.o

after the patch w/ CONFIG_BLK_DEV_IDECD_VERBOSE_ERRORS=n:
   text    data     bss     dec     hex filename
  15091     360    1056   16507    407b drivers/ide/ide-cd_mod.o
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Coding style fixes for VERBOSE_IDE_CD_ERRORS code.

* Add KERN_{ERR,CONT} printk() levels where needed.

This is a preparation for moving this code out of ide-cd.[c,h].
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Re-organize handling of quirky devices:

* Add struct cd_list_entry, ide_cd_quirks_list[] and ide_cd_flags() helper.

* Set flags returned by ide_cd_flags() in ide_cdrom_setup().

* Add IDE_CD_FLAG_VERTOS_{300_SDD,600_ESD} and IDE_CD_FLAG_SANYO_3CD flags.

* Move device quirks from ide_cdrom_setup() to ide_cd_quirks_list[].

* Rename IDE_CD_FLAG_NEC260 to IDE_CD_FLAG_PRE_ATAPI12 and handle
  quirky Stingray 8X CD-ROM using ide_cd_quirks_list[].

* Add IDE_CD_FLAG_FULL_CAPS_PAGE flag and handle quirky ACER 50X CD-ROM
  / WPI 32X CD-ROM using ide_cd_quirk_list[].

* Add IDE_CD_FLAG_PLAY_AUDIO_OK flag and handle quirky MATSHITA DVD-ROMs
  using ide_cd_quirks_list[].

* Add IDE_CD_FLAG_LE_SPEED_FIELDS flag and handle quirky ACER/AOpen 24X
  CD-ROM using ide_cd_quirk_list[].

* Fix some comments about quirky devices while at it.

There should be no functionality changes caused by this patch.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Use BCD2BIN()/BIN2BCD() macros from <linux/bcd.h>
and remove the local bcd2bin()/bin2bcd() inlines.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Remove STANDARD_ATAPI define + drive-by coding style fixes.
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>