The Bus Master IDE Active bit (BM_STATUS_DMAING) is not only set when
the request is still in flight, but also when it has completed and the
size of the physical memory regions in the PRDT was larger than the
transfer size.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This obsoletes tmp105_set() and allows for better error handling.
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Introduce TYPE_ constant and cast macro.
Move the state struct to the new header to allow for future embedding.
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
An early length postincrement in the TMP105's I2C TX path led to
transfers of more than one byte to place the second byte in the third
byte's place within the buffer and the third byte to get discarded.
Fix this by explictly incrementing the length after the checks but
before the callback is called, which again checks the length.
Adjust the Coding Style while at it.
Signed-off-by: Alex Horn <alex.horn@cs.ox.ac.uk>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Allows value sharing with qtest.
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
scsi_req_new() never returns null, and scsi_req_enqueue() dereferences
the pointer, so checking for null is useless.
Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
g_strdup_printf already handles OOM errors, so some error handling in
QEMU code can be removed.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Without this default q35/ppc405 based machines would no longer boot
after commit e4ada29e90
Signed-off-by: Knut Omang <knut.omang@oracle.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Introduce the QOM realizefn suggested by Anthony.
Detailed documentation is supplied in the qdev header.
For now this implements a default DeviceClass::realize callback that
just wraps DeviceClass::init, which it deprecates.
Once all devices have been converted to DeviceClass::realize,
DeviceClass::init is to be removed.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Cc: Anthony Liguori <anthony@codemonkey.ws>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Whether the device was initialized or not is QOM-level information and
currently unused. Drop it from device. This leaves the boolean state of
whether or not DeviceClass::init was called or not, a.k.a. "realized".
Suggested-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch removes the default boot order for pseries machine. This allows
the machine to handle a NULL boot order in case no -boot option is provided.
Thus it helps SLOF firmware to verify if boot order is specified in command
line or not. If no boot order is provided SLOF tries to boot from the
device set in the nvram.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch makes default boot order machine specific instead of
set globally. The default boot order can be set per machine in
QEMUMachine boot_order. This also allows a machine to receive a
NULL boot order when -boot isn't used and take an appropriate action
accordingly. This helps machine boots from the devices as set in
guest's non-volatile memory location in case no boot order is
provided by the user.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* afaerber/memory-ioport:
acpi_piix4: Do not use old_portio-style callbacks
xen_platform: Do not use old_portio-style callbacks
hw/dma.c: Fix conversion of ioport_register* to MemoryRegion
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* stefanha/block:
block: Fix how mirror_run() frees its buffer
win32-aio: Fix how win32_aio_process_completion() frees buffer
scsi-disk: qemu_vfree(NULL) is fine, simplify
w32: Make qemu_vfree() accept NULL like the POSIX implementation
sheepdog: clean up sd_aio_setup()
sheepdog: multiplex the rw FD to flush cache
block: clear dirty bitmap when discarding
ide: issue discard asynchronously but serialize the pieces
ide: fix TRIM with empty range entry
block: make discard asynchronous
raw: support discard on block devices
raw-posix: remember whether discard failed
raw-posix: support discard on more filesystems
block: fix initialization in bdrv_io_limits_enable()
qcow2: Fix segfault on zero-length write
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* afaerber/qom-cpu:
target-i386: Use switch in check_hw_breakpoints()
target-i386: Avoid goto in hw_breakpoint_insert()
target-i386: Introduce hw_{local,global}_breakpoint_enabled()
target-i386: Define DR7 bit field constants
target-i386: Move kvm_check_features_against_host() check to realize time
target-i386: cpu_x86_register() consolidate freeing resources
target-i386: Move setting defaults out of cpu_x86_parse_featurestr()
target-i386: check/enforce: Check all feature words
target-i386/cpu.c: Add feature name array for ext4_features
target-i386: kvm_check_features_against_host(): Use feature_word_info
target-i386/cpu: Introduce FeatureWord typedefs
target-i386: Disable kvm_mmu by default
kvm: Add fake KVM constants to avoid #ifdefs on KVM-specific code
exec: Return CPUState from qemu_get_cpu()
xen: Simplify halting of first CPU
kvm: Pass CPUState to kvm_init_vcpu()
cpu: Move cpu_index field to CPUState
cpu: Move numa_node field to CPUState
target-mips: Clean up mips_cpu_map_tc() documentation
cpu: Move nr_{cores,threads} fields to CPUState
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
[AF: Used HWADDR_PRIx for hwaddr PIIX4_DPRINTF()]
Signed-off-by: Andreas Färber <afaerber@suse.de>
The commit 5822993368 introduced a 1-shift for
some offset in DMA emulation.
Before the previous commit, which converted ioport_register_* to
MemoryRegion, the DMA controller registered 8 ioports with the following
formula:
base + ((8 + i) << d->shift) where 0 <= i < 8
When an IO occured within a Memory Region, DMA callback receives an
offset relative to the start address. Here the start address is:
base + (8 << d->shift).
The offset should be: (i << d->shift). After the shift is reverted, the
offsets are 0..7 not 1..8.
Fixes LP#1089996.
Reported-by: Andreas Gustafsson <gson@gson.org>
Signed-off-by: Julien Grall <julien.grall@citrix.com>
Tested-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Now that discard can take a long time, make it asynchronous.
Each LBA range entry is processed separately because discard
can be an expensive operation.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
ATA-ACS-3 says "If the two byte range length is zero, then the LBA
Range Entry shall be discarded as padding." iovecs are used as if
they are linearized, so it is incorrect to discard the rest of
this iovec.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Move the declaration to qemu/cpu.h and add documentation.
The implementation still depends on CPUArchState for CPU iteration.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Note that target-alpha accesses this field from TCG, now using a
negative offset. Therefore the field is placed last in CPUState.
Pass PowerPCCPU to [kvm]ppc_fixup_cpu() to facilitate this change.
Move common parts of mips cpu_state_reset() to mips_cpu_reset().
Acked-by: Richard Henderson <rth@twiddle.net> (for alpha)
[AF: Rebased onto ppc CPU subclasses and openpic changes]
Signed-off-by: Andreas Färber <afaerber@suse.de>
To facilitate the field movements, pass MIPSCPU to malta_mips_config();
avoid that for mips_cpu_map_tc() since callers only access MIPS Thread
Contexts, inside TCG helpers.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Mingw32 headers define FAR, causing this warning:
/src/qemu/hw/pc87312.c:38:0: warning: "FAR" redefined [enabled by default]
In file included from /usr/local/lib/gcc/i686-mingw32msvc/4.7.0/../../../../i686-mingw32msvc/include/windows.h:48:0,
from /src/qemu/include/sysemu/os-win32.h:29,
from /src/qemu/include/qemu-common.h:46,
from /src/qemu/include/exec/ioport.h:27,
from /src/qemu/hw/isa.h:6,
from /src/qemu/hw/pc87312.h:28,
from /src/qemu/hw/pc87312.c:26:
/usr/local/lib/gcc/i686-mingw32msvc/4.7.0/../../../../i686-mingw32msvc/include/windef.h:34:0: note: this is the location of the previous definition
Avoid the warning by expanding the macros.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Acked-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Prepare an instance_init function for the MemoryRegion init.
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Tested-by: Hervé Poussineau <hpoussin@reactos.org>
Fix the compilation error introduced by msg new field.
CC hw/9pfs/virtio-9p.o
In file included from /home/konradf/Documents/safe/greensocs/virtio-project/x86-qemu/qemu/hw/9pfs/virtio-9p.c:17:0:
/home/konradf/Documents/safe/greensocs/virtio-project/x86-qemu/qemu/hw/virtio-pci.h:30:16: erreur: field ‘msg’ has incomplete type
make: *** [hw/9pfs/virtio-9p.o] Erreur 1
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
virtio_pci_set_guest_notifiers() now takes an additional argument to
specify the number of virtqueues to assign a guest notifier for. This
causes a build breakage for CONFIG_VIRTIO_BLK_DATA_PLANE builds:
/home/mdroth/w/qemu2.git/hw/dataplane/virtio-blk.c: In function
‘virtio_blk_data_plane_start’:
/home/mdroth/w/qemu2.git/hw/dataplane/virtio-blk.c:451:47: error: too
few arguments to function ‘s->vdev->binding->set_guest_notifiers’
/home/mdroth/w/qemu2.git/hw/dataplane/virtio-blk.c: In function
‘virtio_blk_data_plane_stop’:
/home/mdroth/w/qemu2.git/hw/dataplane/virtio-blk.c:511:5: error: too few
arguments to function ‘s->vdev->binding->set_guest_notifiers’
make[1]: *** [hw/dataplane/virtio-blk.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [subdir-x86_64-softmmu] Error 2
Fix this by passing 1 as the number of virtqueues to assign notifiers
for.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Fixes the following:
/home/mdroth/w/qemu2.git/hw/virtio-pci.c: In function
‘kvm_virtio_pci_vector_unmask’:
/home/mdroth/w/qemu2.git/hw/virtio-pci.c:673:12: error: ‘ret’ may be
used uninitialized in this function [-Werror=uninitialized]
cc1: all warnings being treated as errors
make: *** [hw/virtio-pci.o] Error 1
make: *** Waiting for unfinished jobs....
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The GE IP-Octal 232 is an IndustryPack module that implements eight
RS-232 serial ports, each one of which can be redirected to a
character device in the host.
Signed-off-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The TPCI200 is a PCI board that supports up to 4 IndustryPack modules.
A new bus type called 'IndustryPack' has been created so any
compatible module can be attached to this board.
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This protocol extension reuses the same set of grant pages for all
transactions between the front/back drivers, avoiding expensive tlb
flushes, grant table lock contention and switches between userspace
and kernel space. The full description of the protocol can be found in
the public blkif.h header.
http://xenbits.xen.org/gitweb/?p=xen.git;a=blob_plain;f=xen/include/public/io/blkif.h
Speed improvement with 15 guests performing I/O is ~450%.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
On ioreq_release the full ioreq was memset to 0, loosing all the data
and memory allocations inside the QEMUIOVector, which leads to a
memory leak. Create a new function to specifically reset ioreq.
Reported-by: Maik Wessler <maik.wessler@yahoo.com>
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
* kraxel/usb.76:
usb-host: Initialize dev->port the obviously safe way
usb-host: Drop superfluous null test from usb_host_auto_scan()
ehci: Assert state machine is sane w.r.t. EHCIQueue
xhci: nuke transfe5rs on detach
xhci: call xhci_detach_slot on root port detach too
xhci: create xhci_detach_slot helper function
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This further optimizes MSIX handling in virtio-pci.
Also included is pci cleanup by Paolo, and pci device
assignment fix by Alex.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'mst/tags/for_anthony' into staging
pci,virtio
This further optimizes MSIX handling in virtio-pci.
Also included is pci cleanup by Paolo, and pci device
assignment fix by Alex.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* mst/tags/for_anthony:
pci-assign: Enable MSIX on device to match guest
pci: use constants for devices under the 1B36 device ID, document them
ivshmem: use symbolic constant for PCI ID, add to pci-ids.txt
virtio-9p: use symbolic constant, add to pci-ids.txt
reorganize pci-ids.txt
docs: move pci-ids.txt to docs/specs/
vhost: backend masking support
vhost: set started flag while start is in progress
virtio-net: set/clear vhost_started in reverse order
virtio: backend virtqueue notifier masking
virtio-pci: cache msix messages
kvm: add stub for update msi route
msix: add api to access msix message
virtio: don't waste irqfds on control vqs
Coverity worries the strcpy() could overrun the destination. It
can't, because the source always points to usb_host_scan()'s auto
port[], which has the same size. Use pstrcpy() anyway, to hush the
checker.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Coverity points out that port is later passed to usb_host_open(),
which dereferences it. It actually can't be null: it always points to
usb_host_scan()'s auto port[]. Drop the superfluous port == NULL
test.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Coverity worries the EHCIQueue pointer could be null when we pass it
to functions that reference it. The state machine ensures it can't be
null then. Assert that, to hush the checker.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
O_DIRECT on Linux has alignment requirements on I/O buffers and
misaligned requests result in -EINVAL. The Linux virtio_blk guest
driver usually submits aligned requests so I forgot to handle misaligned
requests.
It turns out that virtio-win guest drivers submit misaligned requests.
Handle them using a bounce buffer that meets alignment requirements.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Extract code for read/write command processing into do_rdwr_cmd(). This
brings together pieces that are spread across process_request().
The real motivation is to set the stage for handling misaligned
requests, which the next patch tackles.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
interface_set_client_capabilities() copies only the first few bits,
because it falls into a Classic C trap: you can declare a parameter
uint8_t caps[58], but the resulting parameter type is uint8_t *, not
uint8_t[58]. In particular, sizeof(caps) is sizeof(uint8_t *), not
the intended sizeof(uint8_t[58]).
Harmless, because the bits aren't used, yet. Broken in commit
c10018d6. Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The pointer arithmetic there is safe, but ugly. Coverity grouses
about it. However, the actual comparison is off by one: <= end
instead of < end. Fix by rewriting the check in a cleaner way.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The directory descent mechanism, and a less-flat tree both helped
in making some *-obj-y definitions very short. Many of these
often end up in universal-obj-y, and used to be separate only
because of libuser (which is now part of history...).
Consolidate these variables in a single one.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* 'ppc-for-upstream' of git://repo.or.cz/qemu/agraf: (31 commits)
PPC: linux-user: Calculate context pointer explicitly
target-ppc: Error out for -cpu host on unknown PVR
target-ppc: Slim conversion of model definitions to QOM subclasses
PPC: Bring EPR support closer to reality
PPC: KVM: set has-idle in guest device tree
kvm: Update kernel headers
openpic: fix CTPR and de-assertion of interrupts
openpic: move IACK to its own function
openpic: IRQ_check: search the queue a word at a time
openpic: fix sense and priority bits
openpic: add some bounds checking for IRQ numbers
openpic: use standard bitmap operations
Revert "openpic: Accelerate pending irq search"
openpic: always call IRQ_check from IRQ_get_next
openpic/fsl: critical interrupts ignore mask before v4.1
openpic: make ctpr signed
openpic: rework critical interrupt support
openpic: make register names correspond better with hw docs
ppc/booke: fix crit/mcheck/debug exceptions
openpic: lower interrupt when reading the MSI register
...
The commit c02e1eac88 broke the compilation
for i386. ULL need to be specify for uint64_t value.
Signed-off-by: Julien Grall <julien.grall@citrix.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* stefanha/trivial-patches:
hw/pc.c: Fix converting of ioport_register* to MemoryRegion
Replace remaining gmtime, localtime by gmtime_r, localtime_r
savevm: Remove MinGW specific code which is no longer needed
qga/channel-posix.c: Explicitly include string.h
configure: Fix comment (copy+paste bug)
readline: avoid memcpy() of overlapping regions
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* afaerber-or/prep-up:
prep: Use pc87312 device instead of collection of random ISA devices
prep: Add pc87312 Super I/O emulation
prep: Include devices for ppc64 as well
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The commit 258711 introduced MemoryRegion to replace ioport_region*
for ioport 80h and F0h.
A MemoryRegion needs to have both read and write callback otherwise a segfault
will occur when an access is made.
The previous behaviour of this both ioport is to return 0xffffffffffffffff.
So keep this behaviour.
Reported-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: Julien Grall <julien.grall@citrix.com>
Tested-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This allows removing of MinGW specific code and improves
reentrancy for POSIX hosts.
[Removed unused ret variable in qemu_get_timedate() to fix warning:
vl.c: In function ‘qemu_get_timedate’:
vl.c:451:16: error: variable ‘ret’ set but not used [-Werror=unused-but-set-variable]
-- Stefan Hajnoczi]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Starting with release 1.4 we have a fully functional q35 machine type,
i.e. "qemu -M q35" JustWorks[tm]. Update machine type names to reflect
that:
* pc-1.4 becomes pc-i440fx-1.4
* q35-next becomes pc-q35-1.4
The pc-1.3 (+older) names are maintained for compatibility reasons.
For the same reason the "pc" and "q35" aliases are kept. pc-piix-1.4
continues to be the default machine type, again for compatibility
reasons.
Also updated the description (shown by "qemu -M ?") with host bridge
name, south bridge name and chipset release year.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When the device is reset, the SCSI bus should also be reset so
that in-flight I/O is cancelled.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since 39bffca203 (qdev: register all
types natively through QEMU Object Model), TypeInfo as used in
the common, non-iterative pattern is no longer amended with information
and should therefore be const.
Fix the documented QOM examples:
sed -i 's/static TypeInfo/static const TypeInfo/g' include/qom/object.h
Since frequently the wrong examples are being copied by contributors of
new devices, fix all types in the tree:
sed -i 's/^static TypeInfo/static const TypeInfo/g' */*.c
sed -i 's/^static TypeInfo/static const TypeInfo/g' */*/*.c
This also avoids to piggy-back these changes onto real functional
changes or other refactorings.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
When a guest enables MSIX on a device we evaluate the MSIX vector
table, typically find no unmasked vectors and don't switch the device
to MSIX mode. This generally works fine and the device will be
switched once the guest enables and therefore unmasks a vector.
Unfortunately some drivers enable MSIX, then use interfaces to send
commands between VF & PF or PF & firmware that act based on the host
state of the device. These therefore may break when MSIX is managed
lazily. This change re-enables the previous test used to enable MSIX
(see qemu-kvm a6b402c9), which basically guesses whether a vector
will be used based on the data field of the vector table.
Cc: qemu-stable@nongnu.org
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
VFIO_PCI_NUM_REGIONS and VFIO_PCI_NUM_IRQS should never have been
used in this manner as it locks a specific kernel implementation.
Future features may introduce new regions or interrupt entries
(VGA may add legacy ranges, AER might add an IRQ for error
signalling). Fix this before it gets us into trouble.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: qemu-stable@nongnu.org
Guests typically enable MSI-X with all of the vectors in the MSI-X
vector table masked. Only when the vector is enabled does the vector
get unmasked, resulting in a vector_use callback. These two points,
enable and unmask, correspond to pci_enable_msix() and request_irq()
for Linux guests. Some drivers rely on VF/PF or PF/fw communication
channels that expect the physical state of the device to match the
guest visible state of the device. They don't appreciate lazily
enabling MSI-X on the physical device.
To solve this, enable MSI-X with a single vector when the MSI-X
capability is enabled and immediate disable the vector. This leaves
the physical device in exactly the same state between host and guest.
Furthermore, the brief gap where we enable vector 0, it fires into
userspace, not KVM, so the guest doesn't get spurious interrupts.
Ideally we could call VFIO_DEVICE_SET_IRQS with the right parameters
to enable MSI-X with zero vectors, but this will currently return an
error as the Linux MSI-X interfaces do not allow it.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: qemu-stable@nongnu.org
Commit 667d22d1ae (qdev: move bus removal
to object_unparent) made the assumption that at unparenting time
parent_bus is not NULL. This assumption is unjustified since
object_unparent() may well be called directly after object_initialize(),
without any qdev_set_parent_bus().
This did not cause any issues yet because qdev_[try_]create() does call
qdev_set_parent_bus(), falling back to SysBus if unsupplied.
While at it, ensure that this new function uses the device_ prefix and
make the name more neutral in light of this semantic change.
Reported-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Tested-by: Igor Mammedov <imammedo@redhat.com>
The code depends on some functions from qemu-option.o, so add
qemu-option.o to universal-obj-y to make sure it's included.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Due to disagreement on a name that is generic enough for hw/pci/pci.h,
the symbolic constants are placed in the .c files.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* kraxel/usb.75: (32 commits)
uhci: stop using portio lists
usbredir: Add support for buffered bulk input (v2)
exynos4210: Add EHCI support
usb/ehci: Add SysBus EHCI device for Exynos4210
usb/ehci: Move capsbase and opregbase into SysBus EHCI class
usb/ehci: Clean up SysBus and PCI EHCI split
xhci: call set-address with dummy usbpacket
usb-redir: Add debugging to bufpq save / restore
usbredir: Add usbredir_init_endpoints() helper
usbredir: Verify we have 32 bits bulk length cap when redirecting to xhci
usbredir: Add ep_stopped USBDevice method
usbredir: Add USBEP2I and I2USBEP helper macros
usbredir: Add an usbredir_stop_ep helper function
usb: Add an usb_device_ep_stopped USBDevice method
usb: Fix usb_ep_find_packet_by_id
hid: Change idle handling to use a timer
uhci: Maximize how many frames we catch up when behind
uhci: Limit amount of frames processed in one go
uhci: Add a QH_VALID define
uhci: Fix pending interrupts getting lost on migration
...
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Buffered bulk mode is intended for bulk *input* endpoints, where the data is
of a streaming nature (not part of a command-response protocol). These
endpoints' input buffer may overflow if data is not read quickly enough.
So in buffered bulk mode the usb-host takes care of the submitting and
re-submitting of bulk transfers.
Buffered bulk mode is necessary for reliable operation with the bulk in
endpoints of usb to serial convertors. Unfortunatelty buffered bulk input
mode will only work with certain devices, therefor this patch also adds a
usb-id table to enable it for devices which need it, while leaving the
bulk ep handling for other devices unmodified.
Note that the bumping of the required usbredir from 0.5.3 to 0.6 does
not mean that we will now need a newer usbredir release then qemu-1.3,
.pc files reporting 0.5.3 have only ever existed in usbredir builds directly
from git, so qemu-1.3 needs the 0.6 release too.
Changes in v2:
-Split of quirk handling into quirks.c
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Support backend guest notifier masking in vhost-net:
create eventfd at device init, when masked,
make vhost use that as eventfd instead of
sending an interrupt.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This makes it possible to use started flag for sanity checking
of callbacks that happen during start/stop.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
As vhost started is cleared last thing on stop,
set it first things on start. This makes it
possible to use vhost_started while start is in
progress which is used by follow-up patches.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
some backends (notably vhost) can mask events
at their source in a way that is more efficient
than masking through kvm.
Specifically
- masking in kvm uses rcu write side so it has high latency
- in kvm on unmask we always send an interrupt
masking at source does not have these issues.
Add such support in virtio.h and use in virtio-pci.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Some guests mask a vector then unmask without changing it.
Store vectors to avoid kvm system calls in this case.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Pass nvqs to set_guest_notifiers. This makes it possible to
save on irqfds by not allocating one for the control vq
for virtio-net.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We already used to support the external proxy facility of FSL MPICs,
but only implemented it halfway correctly.
This patch adds support for
* dynamic enablement of the EPR facility
* interrupt acknowledgement only when the interrupt is delivered
This way the implementation now is closer to real hardware.
Signed-off-by: Alexander Graf <agraf@suse.de>
On e500mc, the platform doesn't provide a way for the CPU to go idle.
To still not uselessly burn CPU time, expose an idle hypercall to the guest
if kvm supports it.
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
[agraf: adjust for current code base, add patch description, fix non-kvm case]
Signed-off-by: Alexander Graf <agraf@suse.de>
Properly implement level-triggered interrupts by withdrawing an
interrupt from the raised queue if the interrupt source de-asserts.
Also withdraw from the raised queue if the interrupt becomes masked.
When CTPR is written, check whether we need to raise or lower the
interrupt output.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Besides making the code cleaner, we will need a separate way to access
IACK in order to implement EPR (external proxy) interrupt delivery.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Search the queue more efficiently by first looking for a non-zero word,
and then using the common bit-searching function to find the bit within
the word. It would be even nicer if bitops_ffsl() could be hooked up
to the compiler intrinsic so that bit-searching instructions could be
used, but that's another matter.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Previously, the sense and priority bits were masked off when writing
to IVPR, and all interrupts were treated as edge-triggered (despite
the existence of code for handling level-triggered interrupts).
Polarity is implemented only as storage. We don't simulate the
bad effects that you'd get on real hardware if you set this incorrectly,
but at least the guest sees the right thing when it reads back the register.
Sense now controls level/edge on FSL external interrupts (and all
interrupts on non-FSL MPIC). FSL internal interrupts do not have a sense
bit (reads as zero), but are level. FSL timers and IPIs do not have
sense or polarity bits (read as zero), and are edge-triggered. To
accommodate FSL internal interrupts, QEMU's internal notion of whether an
interrupt is level-triggered is separated from the IVPR bit.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
The two checks with abort() guard against potential QEMU-internal
problems, but the EOI check stops the guest from causing updates to queue
position -1 and other havoc if it writes EOI with no interrupt in
service.
Signed-off-by: Scott Wood <scottwood@freescale.com>
[agraf: remove hunk in code that didn't get applied yet]
Signed-off-by: Alexander Graf <agraf@suse.de>
Besides the private implementation being redundant, namespace collisions
prevented the use of other things in bitops.h.
Serialization does get a bit more awkward, unfortunately, since the
standard bitmap operations are "unsigned long" rather than "uint32_t",
though in exchange we will get faster queue lookups on 64-bit hosts once
we search a word at a time.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This reverts commit a9bd83f4c65de0058659ede009fa1a241f379edd.
This counting approach is not robust against setting a bit that
was already set, or clearing a bit that was already clear. Perhaps
that is considered a bug, but besides the lack of any documentation
for that restriction, it's a pretty unpleasant way for the problem
to manifest itself.
It could be made more robust by testing the current value of the
bit before changing the count, but a later patch speeds up IRQ_check
in all cases, not just when there's nothing pending. Hopefully that
should be adequate to address performance concerns.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Previously the code relied on the queue's "next" field getting
set to -1 sometime between an update to the bitmap, and the next
call to IRQ_get_next. Sometimes this happened after the update.
Sometimes it happened before the check. Sometimes it didn't happen
at all.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Other priorities are signed, so avoid comparisons between
signed and unsigned.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Kevin Wolf