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2011-10-28qdev: switch children device list to QTAILQPaolo Bonzini8-28/+28
SCSI buses will need to read the children list first-to-last. This requires using a QTAILQ, because hell breaks loose if you just try inserting at the tail (thus reversing the order of all existing visits from last-to-first to first-to-tail). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi: move tcq/ndev to SCSIBusOps (now SCSIBusInfo)Paolo Bonzini7-32/+39
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi-disk: report media changed via GET EVENT STATUS NOTIFICATIONPaolo Bonzini1-4/+53
This adds support for media change notification via the GET EVENT STATUS NOTIFICATION command, used by Linux versions 2.6.38 and newer. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi-disk: support READ DVD STRUCTUREPaolo Bonzini1-1/+101
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi-disk: support DVD profile in GET CONFIGURATIONPaolo Bonzini1-8/+42
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28atapi/scsi-disk: make mode page values coherent between the twoPaolo Bonzini2-16/+31
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>
2011-10-28scsi-disk: store valid mode pages in a tablePaolo Bonzini1-12/+13
A small refactoring of the MODE SENSE implementation in scsi-disk. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi-disk: add stubs for more MMC commandsPaolo Bonzini2-5/+65
This patch adds a few stub implementations for MMC commands to scsi-disk, to be filled in later in the series. It also adds to scsi-defs.h constants for commands implemented by ide/atapi.c, when missing. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi-disk: fix coding style issues (braces)Paolo Bonzini1-25/+46
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi-disk: report media changed via unit attention sense codesPaolo Bonzini3-1/+35
Building on the previous patch, this one adds a media change callback to scsi-disk. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi: notify the device when unit attention is reportedPaolo Bonzini2-5/+29
Reporting media change events via unit attention sense codes requires a small state machine: first report "NO MEDIUM", then report "MEDIUM MAY HAVE CHANGED". Unfortunately there is no good hooking point for the device to notice that its pending unit attention condition has been reported. This patch reworks the generic machinery to add one. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28atapi: cleanup/fix mode sense resultsPaolo Bonzini1-4/+6
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>
2011-10-28atapi: move GESN definitions to scsi-defs.hPaolo Bonzini2-37/+27
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>
2011-10-28atapi/scsi: unify definitions for MMCPaolo Bonzini7-104/+101
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>
2011-10-28scsi: pass correct sense code for ENOMEDIUMPaolo Bonzini1-0/+3
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28Documentation: Add syntax for using sheepdog devicesRonnie Sahlberg1-0/+27
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28block: reinitialize across bdrv_close()/bdrv_open()Stefan Hajnoczi1-2/+4
Several BlockDriverState fields are not being reinitialized across bdrv_close()/bdrv_open(). Make sure they are reset to their default values. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28block: set bs->read_only before .bdrv_open()Stefan Hajnoczi1-2/+2
Several block drivers set bs->read_only in .bdrv_open() but block.c:bdrv_open_common() clobbers its value. Additionally, QED uses bdrv_is_read_only() in .bdrv_open() to decide whether to perform consistency checks. The correct ordering is to initialize bs->read_only from the open flags before calling .bdrv_open(). This way block drivers can override it if necessary and can use bdrv_is_read_only() in .bdrv_open(). Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28qemu-io: delete bs instead of leaking itStefan Hajnoczi1-2/+3
Using bdrv_close() is not enough to free a BlockDriverState. Since we explicitly create it with bdrv_new(), use bdrv_delete() to close and delete it. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28block: fix qcow2_co_flush deadlockDong Xu Wang1-0/+2
If qcow2_cache_flush failed, s->lock will not be unlock. Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28Documentation: Describe NBD URL syntaxRonnie Sahlberg1-0/+21
This patch adds a short description of how to specify a NBD device to QEMU. Syntax for both TCP and Unix Domain Sockets are provided as well as examples. Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28vmdk: Fix possible segfaultsKevin Wolf1-1/+6
Data we read from the disk isn't necessarily null terminated and may not contain the string we're looking for. The code needs to be a bit more careful here. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28vmdk: Improve error handlingKevin Wolf1-6/+15
Return the right error values in some more places. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28vmdk: Fix use of uninitialised valueKevin Wolf1-1/+1
In error cases, cid is never set. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28ide: Fix off-by-one error in array index checkKevin Wolf1-1/+1
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-28qcow: Fix bdrv_write_compressed error handlingKevin Wolf1-11/+19
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-28block: Fix bdrv_open use after freeKevin Wolf1-1/+1
tmp_filename was used outside the block it was defined in, i.e. after it went out of scope. Move its declaration to the top level. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28block: Remove dead codeKevin Wolf1-5/+1
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28qcow2: fix some errors and typo in qcow2.txtZhi Yong Wu1-3/+3
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28Teach block/vdi about "discarded" (no longer allocated) blocksEric Sunshine1-9/+14
An entry in the VDI block map will hold an offset to the actual block if the block is allocated, or one of two specially-interpreted values if not allocated. Using VirtualBox terminology, value VDI_IMAGE_BLOCK_FREE (0xffffffff) represents a never-allocated block (semantically arbitrary content). VDI_IMAGE_BLOCK_ZERO (0xfffffffe) represents a "discarded" block (semantically zero-filled). block/vdi knows only about VDI_IMAGE_BLOCK_FREE. Teach it about VDI_IMAGE_BLOCK_ZERO. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28Documentation: Add iSCSI sectionRonnie Sahlberg1-0/+42
Add new section for device URL syntax for special files and describe the iSCSI URL with examples Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28iSCSI block driverRonnie Sahlberg4-0/+629
This provides built-in support for iSCSI to QEMU. This has the advantage that the iSCSI devices need not be made visible to the host, which is useful if you have very many virtual machines and very many iscsi devices. It also has the benefit that non-root users of QEMU can access iSCSI devices across the network without requiring root privilege on the host. This driver interfaces with the multiplatform posix library for iscsi initiator/client access to iscsi devices hosted at git://github.com/sahlberg/libiscsi.git The patch adds the driver to interface with the iscsi library. It also updated the configure script to * by default, probe is libiscsi is available and if so, build qemu against libiscsi. * --enable-libiscsi Force a build against libiscsi. If libiscsi is not available the build will fail. * --disable-libiscsi Do not link against libiscsi, even if it is available. When linked with libiscsi, qemu gains support to access iscsi resources such as disks and cdrom directly, without having to make the devices visible to the host. You can specify devices using a iscsi url of the form : iscsi://[<username>[:<password>@]]<host>[:<port]/<target-iqn-name>/<lun> When using authentication, the password can optionally be set with LIBISCSI_CHAP_PASSWORD="password" to avoid it showing up in the process list Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-27Merge branch 'rth/vis2' of git://repo.or.cz/qemu/rthBlue Swirl11-1043/+1400
* 'rth/vis2' of git://repo.or.cz/qemu/rth: target-sparc: Implement FALIGNDATA inline. target-sparc: Implement BMASK/BSHUFFLE. target-sparc: Implement ALIGNADDR* inline. target-sparc: Implement EDGE* instructions. target-sparc: Implement fpack{16,32,fix}. target-sparc: Implement PDIST. target-sparc: Do exceptions management fully inside the helpers. target-sparc: Change fpr representation to doubles. target-sparc: Undo cpu_fpr rename. target-sparc: Extract float128 move to a function. target-sparc: Extract common code for floating-point operations. target-sparc: Make FPU/VIS helpers const when possible. target-sparc: Pass float64 parameters instead of dt0/1 temporaries. target-sparc: Add accessors for double-precision fpr access. target-sparc: Mark fprs dirty in store accessor. target-sparc: Add accessors for single-precision fpr access.
2011-10-27Merge branch 'target-arm.for-upstream' of ↵Andrzej Zaborowski8-12/+760
git://git.linaro.org/people/pmaydell/qemu-arm
2011-10-26target-sparc: Implement FALIGNDATA inline.Richard Henderson3-19/+26
This is a relatively simple sequence of shifts. Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Implement BMASK/BSHUFFLE.Richard Henderson3-4/+40
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Implement ALIGNADDR* inline.Richard Henderson3-14/+22
While ALIGNADDR was implemented out-of-line, ALIGNADDRL was not implemeneted at all. However, this is a very simple operation so we're better off doing this inline. Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Implement EDGE* instructions.Richard Henderson1-2/+175
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Implement fpack{16,32,fix}.Richard Henderson3-1/+96
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Implement PDIST.Richard Henderson3-2/+41
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Do exceptions management fully inside the helpers.Richard Henderson3-91/+146
This reduces the size of the individual translation blocks, since we only emit a single call for each FOP rather than three. In addition, clear_float_exceptions expands inline to a single byte store. Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Change fpr representation to doubles.Richard Henderson8-211/+202
This allows a more efficient representation for 64-bit hosts. It should be about the same for 32-bit hosts, as we can still access the individual pieces of the double. Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Undo cpu_fpr rename.Richard Henderson1-28/+28
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Extract float128 move to a function.Richard Henderson1-32/+18
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Extract common code for floating-point operations.Richard Henderson1-454/+381
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Make FPU/VIS helpers const when possible.Richard Henderson4-92/+78
This also removes the unused ENV parameter from these helpers. Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Pass float64 parameters instead of dt0/1 temporaries.Richard Henderson6-449/+381
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Add accessors for double-precision fpr access.Richard Henderson1-112/+130
Begin using i64 quantities to manipulate double-precision values. On a 64-bit host this will, for the moment, generate less efficient code; on a 32-bit host code quality should be largely unchanged. Code quality for 64-bit will be adjusted with a subsequent patch. Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Mark fprs dirty in store accessor.Richard Henderson1-46/+8
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-26target-sparc: Add accessors for single-precision fpr access.Richard Henderson1-195/+337
Load, store, and "create destination". This version attempts to change the behaviour of the translator as little as possible. We previously used cpu_tmp32 as the temporary destination, and we continue to use that. This will eventually allow a change in representation of the fprs. Change the name of the cpu_fpr array to make certain that all instances are converted. Signed-off-by: Richard Henderson <rth@twiddle.net>
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