Commit Graph

27 Commits

Author SHA1 Message Date
Ronnie Sahlberg
ce560dcf20 ATAPI: STARTSTOPUNIT only eject/load media if powercondition is 0
The START STOP UNIT command will only eject/load media if
power condition is zero.

If power condition is !0 then LOEJ and START will be ignored.

From MMC (sbc contains similar wordings too)
  The Power Conditions field requests the block device to be placed
  in the power condition defined in
  Table 558. If this field has a value other than 0h then the Start
  and LoEj bits shall be ignored.

Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-12 15:50:09 +02:00
Paolo Bonzini
55042b955b atapi: implement READ DISC INFORMATION
This command is not necessary for CD-ROM and DVD-ROM, but some versions of
udev trip on its absence.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-07-02 10:18:41 +02:00
Luiz Capitulino
d88b1819dd block: Don't call bdrv_eject() if the tray state didn't change
It's not needed. Besides we can then assume that bdrv_eject() is
only called when there's a tray state change, which is useful to
the DEVICE_TRAY_MOVED event (going to be added in a future
commit).

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
2012-02-22 17:23:21 -02:00
Paolo Bonzini
ad54ae80c7 block: bdrv_aio_* do not return NULL
Initially done with the following semantic patch:

@ rule1 @
expression E;
statement S;
@@
  E =
(
   bdrv_aio_readv
|  bdrv_aio_writev
|  bdrv_aio_flush
|  bdrv_aio_discard
|  bdrv_aio_ioctl
)
     (...);
(
- if (E == NULL) { ... }
|
- if (E)
    { <... S ...> }
)

which however missed the occurrence in block/blkverify.c
(as it should have done), and left behind some unused
variables.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-15 12:40:07 +01:00
Paolo Bonzini
2c20ae11ad atapi: kill MODE SENSE(6), fix MODE SENSE(10)
Mode page 2A of emulated ATAPI DVD-ROM should have page length 0x14
like SCSI CD-ROM, rather than 0x12.

Mode page length is off by 8, as it should contain the length of the
payload after the first two bytes.

MODE SENSE(6) should be thrown out of ATAPI DVD-ROM emulation.  It is
not specified in the ATAPI list of MMC-2, and MMC-5 prescribes to use
MODE SENSE(10).  Anyway, its implementation is wrong.

Reported-by: Thomas Schmitt <scdbackup@gmx.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-11-18 13:54:32 +01:00
Paolo Bonzini
2df0a3a308 atapi: implement eject requests
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-11-11 14:02:57 +01:00
Paolo Bonzini
a07c7dcd6f atapi/scsi-disk: make mode page values coherent between the two
This patch adds to scsi-disk the missing mode page 0x01 for both disk
and CD-ROM drives, and mode page 0x0e for CD drives only.

A few offsets were wrong in atapi.c.  Also change the 2Ah mode page to
expose DVD media read capabilities in the IDE cdrom.  This lets you run
dvd+rw-mediainfo on the virtual DVD drives.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28 19:25:50 +02:00
Paolo Bonzini
af0e1ea2d3 atapi: cleanup/fix mode sense results
The first two bytes (after the 8-byte ATAPI header) are the mode page
number and the number of bytes after the length field itself.  Make
this clear in the code.

The AUDIO_CTL page was filled with wrong values.  It is not anymore in
MMC, but at least keep the values sane.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28 19:25:50 +02:00
Paolo Bonzini
f0f992e650 atapi: move GESN definitions to scsi-defs.h
As a complement to the previous patch, move definitions for GET EVENT
STATUS NOTIFICATION from the two functions to scsi-defs.h.

The NCR_* constants are just bit values corresponding to the ENC_*
values, with no offsets even, so keep just one copy.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28 19:25:50 +02:00
Paolo Bonzini
67cc61e430 atapi/scsi: unify definitions for MMC
The definitions in ide/internal.h are duplicates, since ATAPI commands
actually come from SCSI.  Use the ones in scsi-defs.h and move the
missing ones there.  Two exceptions:

- MODE_PAGE_WRITE_PARMS conflicts with the "flexible disk geometry"
page in scsi-disk.c.  It is unused, so pick the latter.

- GPCMD_* is left in ide/internal.h, at least for now.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28 19:25:50 +02:00
Markus Armbruster
48f65b3f52 ide/atapi: Don't fail eject when tray is already open
MMC-5 6.40.2.6 specifies that START STOP UNIT succeeds when the drive
already has the requested state.  cmd_start_stop_unit() fails when
asked to eject while the tray is open and locked.  Fix that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-12 15:17:21 +02:00
Markus Armbruster
025e849a50 block: Rename bdrv_set_locked() to bdrv_lock_medium()
While there, make the locked parameter bool.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-12 15:17:20 +02:00
Markus Armbruster
fdec4404dd block: Leave enforcing tray lock to device models
The device model knows best when to accept the guest's eject command.
No need to detour through the block layer.

bdrv_eject() can't fail anymore.  Make it void.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-12 15:17:20 +02:00
Markus Armbruster
a0a7573b84 ide/atapi: Track tray locked state
We already track it in BlockDriverState.  Just like tray open/close
state, we should track it in the device models instead, because it's
device state.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-12 15:17:20 +02:00
Markus Armbruster
a1aff5bf67 block: Revert entanglement of bdrv_is_inserted() with tray status
Commit 4be9762a changed bdrv_is_inserted() to fail when the tray is
open.  Unfortunately, there are two different kinds of users, with
conflicting needs.

1. Device models using bdrv_eject(), currently ide-cd and scsi-cd.
They expect bdrv_is_inserted() to reflect the tray status.  Commit
4be9762a makes them happy.

2. Code that wants to know whether a BlockDriverState has media, such
as find_image_format(), bdrv_flush_all().  Commit 4be9762a makes them
unhappy.  In particular, it breaks flush on VM stop for media ejected
by the guest.

Revert the change to bdrv_is_inserted().  Check the tray status in the
device models instead.

Note on IDE: Since only ATAPI devices have a tray, and they don't
accept ATA commands since the recent commit "ide: Reject ATA commands
specific to drive kinds", checking in atapi.c suffices.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-12 15:17:20 +02:00
Markus Armbruster
dd06333392 ide/atapi: Track tray open/close state
We already track it in BlockDriverState since commit 4be9762a.  As
discussed in that commit's message, we should track it in the device
device models instead, because it's device state.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-12 15:17:20 +02:00
Markus Armbruster
f077656418 ide/atapi: Clean up misleading name in cmd_start_stop_unit()
"eject" is misleading; it means "eject" when start is clear, but
"load" when start is set.  Rename to loej, because that's how MMC-5
calls it, in section 6.40.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-12 15:17:19 +02:00
Stefan Weil
541dc0d47f Use new macro QEMU_PACKED for packed structures
Most changes were made using these commands:

git grep -la '__attribute__((packed))'|xargs perl -pi -e 's/__attribute__\(\(packed\)\)/QEMU_PACKED/'
git grep -la '__attribute__ ((packed))'|xargs perl -pi -e 's/__attribute__ \(\(packed\)\)/QEMU_PACKED/'
git grep -la '__attribute__((__packed__))'|xargs perl -pi -e 's/__attribute__\(\(__packed__\)\)/QEMU_PACKED/'
git grep -la '__attribute__ ((__packed__))'|xargs perl -pi -e 's/__attribute__ \(\(__packed__\)\)/QEMU_PACKED/'
git grep -la '__attribute((packed))'|xargs perl -pi -e 's/__attribute\(\(packed\)\)/QEMU_PACKED/'

Whitespace in linux-user/syscall_defs.h was fixed manually
to avoid warnings from scripts/checkpatch.pl.

Manual changes were also applied to hw/pc.c.

I did not fix indentation with tabs in block/vvfat.c.
The patch will show 4 errors with scripts/checkpatch.pl.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-09-03 10:45:59 +00:00
Christoph Hellwig
a597e79ce1 block: explicit I/O accounting
Decouple the I/O accounting from bdrv_aio_readv/writev/flush and
make the hardware models call directly into the accounting helpers.

This means:
 - we do not count internal requests from image formats in addition
   to guest originating I/O
 - we do not double count I/O ops if the device model handles it
   chunk wise
 - we only account I/O once it actuall is done
 - can extent I/O accounting to synchronous or coroutine I/O easily
 - implement I/O latency tracking easily (see the next patch)

I've conveted the existing device model callers to the new model,
device models that are using synchronous I/O and weren't accounted
before haven't been updated yet.  Also scsi hasn't been converted
to the end-to-end accounting as I want to defer that after the pending
scsi layer overhaul.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-25 18:18:42 +02:00
Alon Levy
ab71982716 ide/atapi: fix set but unused
Signed-off-by: Alon Levy <alevy@redhat.com>
Acked-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-05-03 11:29:21 +02:00
Amit Shah
4a737d14d0 atapi: Explain why we need a 'media not present' state
After the re-org of the atapi code, it might not be intuitive for a
reader of the code to understand why we're inserting a 'media not
present' state between cd changes.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-05-03 11:29:21 +02:00
Amit Shah
a7acf552e2 atapi: Move comment to proper place
Move misplaced comment for media_is_dvd()

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-05-03 11:29:21 +02:00
Kevin Wolf
7a2c4b8234 ide/atapi: Introduce CHECK_READY flag for commands
Some commands are supposed to report a Not Ready Condition (i.e. they require
a medium to be present in order to execute successfully). Instead of
duplicating the check in each command implementation, let's add a flag and
check it before calling the command.

This patch only converts existing checks, it does not introduce new checks for
any of the other commands that can/should report a Not Ready Condition.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-04-27 16:21:00 +02:00
Kevin Wolf
e119bcaceb ide/atapi: Replace bdrv_get_geometry calls by s->nb_sectors
The disk size can only change when the medium is changed, and the change
callback takes care of updating s->nb_sectors in this case.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-04-27 16:20:59 +02:00
Kevin Wolf
e1a064f982 ide/atapi: Use table instead of switch for commands
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-04-27 16:20:59 +02:00
Kevin Wolf
a60cf7e7eb ide/atapi: Factor commands out
In preparation for a table of function pointers, factor each command out from
ide_atapi_cmd() into its own function.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-04-27 16:20:59 +02:00
Kevin Wolf
33231e0e22 ide: Split atapi.c out
Besides moving code, this patch only fixes some whitespace issues in the moved
code and makes all functions in atapi.c static which can be static.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-04-27 16:20:27 +02:00