Paolo Bonzini [Wed, 12 Oct 2011 12:27:40 +0000 (14:27 +0200)]
scsi-disk: small clean up to INQUIRY
Set s->removable, s->qdev.blocksize and s->qdev.type in the callers
of scsi_initfn.
With this in place, s->qdev.type is allowed, and we can just reuse it
as the first byte in VPD data (just like we do in standard INQUIRY data).
Also set s->removable is set consistently and we can use it.
Paolo Bonzini [Mon, 3 Oct 2011 11:57:06 +0000 (13:57 +0200)]
scsi-disk: fail READ CAPACITY if LBA != 0 but PMI == 0
Tested by the Windows Logo Kit SCSI Compliance test. From SBC-3, paragraph
5.25: "The LOGICAL BLOCK ADDRESS field shall be set to zero if the PMI
bit is set to zero. If the PMI bit is set to zero and the LOGICAL BLOCK
ADDRESS field is not set to zero, then the device server shall terminate
the command with CHECK CONDITION status with the sense key set to ILLEGAL
REQUEST and the additional sense code set to INVALID FIELD IN CDB".
Paolo Bonzini [Sat, 13 Aug 2011 16:55:17 +0000 (18:55 +0200)]
scsi: allow arbitrary LUNs
This only requires changes in two places: in SCSIBus, we need to look
for a free LUN if somebody creates a device with a pre-existing scsi-id
but the default LUN (-1, meaning "search for a free spot"); in vSCSI,
we need to actually parse the LUN according to the SCSI spec.
For vSCSI, max_target/max_lun are set according to the logical unit
addressing format in SAM.
Paolo Bonzini [Thu, 28 Jul 2011 16:02:13 +0000 (18:02 +0200)]
scsi: remove devs array from SCSIBus
Change the devs array into a linked list, and add a scsi_device_find
function to navigate the children list instead. This lets the SCSI
bus use more complex addressing, and HBAs can talk to the correct device
when there are multiple LUNs per target.
scsi_device_find may return another LUN on the same target if none is
found that matches exactly.
Paolo Bonzini [Wed, 14 Sep 2011 07:28:06 +0000 (09:28 +0200)]
qdev: switch children device list to QTAILQ
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).
Paolo Bonzini [Tue, 13 Sep 2011 13:08:22 +0000 (15:08 +0200)]
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.
Paolo Bonzini [Tue, 13 Sep 2011 12:33:47 +0000 (14:33 +0200)]
scsi-disk: add stubs for more MMC commands
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.
Paolo Bonzini [Tue, 13 Sep 2011 14:19:53 +0000 (16:19 +0200)]
scsi: notify the device when unit attention is reported
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.
Paolo Bonzini [Mon, 17 Oct 2011 14:34:59 +0000 (16:34 +0200)]
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.
Paolo Bonzini [Tue, 13 Sep 2011 12:41:56 +0000 (14:41 +0200)]
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.
Stefan Hajnoczi [Thu, 27 Oct 2011 09:54:27 +0000 (10:54 +0100)]
block: set bs->read_only before .bdrv_open()
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().
Ronnie Sahlberg [Thu, 27 Oct 2011 09:33:21 +0000 (20:33 +1100)]
Documentation: Describe NBD URL syntax
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.
Kevin Wolf [Wed, 26 Oct 2011 10:25:52 +0000 (12:25 +0200)]
vmdk: Fix possible segfaults
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.
Eric Sunshine [Wed, 26 Oct 2011 19:51:18 +0000 (15:51 -0400)]
Teach block/vdi about "discarded" (no longer allocated) blocks
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.
Ronnie Sahlberg [Tue, 25 Oct 2011 08:24:24 +0000 (19:24 +1100)]
iSCSI block driver
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
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.
target-sparc: Do exceptions management fully inside the helpers.
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.
target-sparc: Change fpr representation to doubles.
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.
target-sparc: Add accessors for double-precision fpr access.
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.
target-sparc: Add accessors for single-precision fpr access.
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.
Blue Swirl [Mon, 1 Aug 2011 09:20:58 +0000 (09:20 +0000)]
Sparc: avoid AREG0 for softint op helpers and Leon cache control
Make softint op helpers and Leon cache irq manager take a parameter
for CPUState instead of relying on global env. Move the functions
to int{32,64}_helper.c.
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