The pre-1.0 firmware path for SCSI devices already included the LUN
using the suffix argument to add_boot_device_path. I missed that when
making channel and LUN customizable. Avoid that it is included twice, and
convert the colons to commas for consistency with other kinds of devices
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This bug was detected by codespell.
In mips_mipssim.c a grammatical error was fixed, too.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
The default is still 3, and I didn't change older machine types.
Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Fix a long-standing bug which meant that any attempt to do an
8 or 16 bit read from the OMAP GPIO module would cause qemu to
crash due to an infinite recursion.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
When running the s390x virtio machine we can potentially use uninitialized
memory for the virtio device backing ram. That can lead to weird breakge.
So let's better initialize it to 0 properly.
Reported-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
v1 -> v2:
- use target_phys_addr_t
On s390 a shutdown is the state of all CPUs being either stopped
or disabled (for interrupts) waiting. We have to track the overall
number of running CPUs to call the shutdown sequence accordingly.
This patch implements the counting and shutdown handling for the
kvm path in qemu.
Lets also wrap changes to env->halted and env->exception_index.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
The default kernel command line for s390 is
"root=/dev/ram0 ro"
When overriding this line, we have to ensure to also copy the \0 to
avoid false lines, for example, -append "root=/dev/vda" will result in
"root=/dev/vda0 ro" with the current code.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Juha Riihimäki <juha.riihimaki@nokia.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
also gracefully fail on nand_device_init() for unsupported block
size instead of aborting.
Signed-off-by: Juha Riihimäki <juha.riihimaki@nokia.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
Depending on the considered baseboard the bit used to
reset the platform is different.
Here is the list of considered Realview/Versatile platforms:
Realview/Versatile AB for ARM926EJ-S: BOARD_ID = 0x100 = BOARD_ID_PB9
http://infocenter.arm.com/help/topic/com.arm.doc.dui0225d/CACCIFGI.html
RealView Emulation Baseboard: BOARD_ID = 0x140 = BOARD_ID_EB
No reset register
RealView PB for Cortex-A8: BOARD_ID = 0x178 = BOARD_ID_PBA8
http://infocenter.arm.com/help/topic/com.arm.doc.dui0417d/BBACIGAD.html
RealView PB for Cortex-A9: BOARD_ID = 0x182 = BOARD_ID_PBX
http://infocenter.arm.com/help/topic/com.arm.doc.dui0440b/CACCHBFB.html
Motherboard Express =C2=B5ATX: BOARD_ID = 0x190 = BOARD_ID_VEXPRESS
No reset register
Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
Fix an error in commit afd4a6522 which meant that writing a zero
to the RW bits in the PMCR wouldn't actually clear them. (Error
spotted by Andrzej Zaborowski.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
"!X == 2" is always false (spotted by Coverity), so the checks
for whether rndis is in the correct state would never fire.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
There are only three counter/timers on the integrator board:
correct the bounds check to avoid an array overrun. (Spotted
by Coverity, see bug 887883).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Fix a bug in handling the write-one-to-clear bits in the PMCR
which meant that we would always clear the bit even if the
value written was a zero. Spotted by Coverity (see bug 887883).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Remove a pointless comparison of an array to null. (There is
no need to check whether s->out[i] is non-null as qemu_set_irq
will do that for us.) Spotted by Coverity (see bug 887883).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Remove a check for g_malloc failing: this never happens.
Also use g_malloc rather than g_malloc0 as we immediately
memset the entire region and so zero-initialising it is pointless.
Spotted by Coverity (see bug 887883).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Avoid a crash due to null pointer dereference if a guest attempts
to access banked registers for a nonexistent bank. Spotted by
Coverity (see bug 887883).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since we added PCI support to the pseries machine, we include a qlist of
PCI host bridges in the sPAPREnvironment structure. However this list
was never properly initialized it. Somehow we got away with this until
some other recent change broke it, and we now segfault immediately on
startup.
This patch adds the required QLIST_INIT(), and while we're at it makes sure
we initialize the rest of the sPAPREnvironment structure to 0, to avoid
future nasty surprises.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Fix a use-while-uninitialized of the fd_type[] array (introduced
in commit 34d4260e1, noticed by Coverity). This is more theoretical
than practical, since it's quite hard to get here with floppy==NULL
(the qdev_try_create() of the isa-fdc device has to fail).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Add a missing 'break' statement to fix a buffer overrun when
executing the EEPROM write-all command. Spotted by Coverity
(see bug 887883).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
hpet_timer timer callback rearms itself based on difference between
current HPET tick counter and comparator value. Difference calculated by
the hpet_calculate_diff function is limited to non-negative values.
cur_tick is calculated via hpet_get_ticks that uses qemu_get_clock_ns(vm_clock).
With -icount enabled vm_clock doesn't advance during qemu_run_timers
loop thus once difference is zero, qemu_run_timers loops forever
handling hpet_timer.
Limit hpet_calculate_diff results to positive only values to avoid that
infinite loop.
This fixes the following qemu-system-x86_64 hang when it reaches
timer_irq_works() in the linux bootup:
[ 0.000000] Fast TSC calibration using PIT
[ 0.000000] Detected 1000.054 MHz processor.
[ 0.000031] Calibrating delay loop (skipped), value calculated using timer frequency.. 2000.10 BogoMIPS (lpj=10000540)
[ 0.000404] pid_max: default: 32768 minimum: 301
[ 0.001138] Mount-cache hash table entries: 256
[ 0.003883] Initializing cgroup subsys ns
[ 0.004035] Initializing cgroup subsys cpuacct
[ 0.004280] Initializing cgroup subsys freezer
[ 0.004790] Performance Events: AMD PMU driver.
[ 0.004985] ... version: 0
[ 0.005134] ... bit width: 48
[ 0.005285] ... generic registers: 4
[ 0.005437] ... value mask: 0000ffffffffffff
[ 0.005625] ... max period: 00007fffffffffff
[ 0.005807] ... fixed-purpose events: 0
[ 0.005957] ... event mask: 000000000000000f
[ 0.006275] SMP alternatives: switching to UP code
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add missing 'break' statements which would have meant that writing
to an 8 bit NAND device was broken. Spotted by Coverity (see bug
887883).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Fix a bug revealed by a coverity scan (see bug 887883) which meant
that we would never print the warning about unpredictable behaviour
if a nonexistent overlay is enabled.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Modern distributions place xattr.h in /usr/include/sys, and fold
libattr.so into libc. They also don't have an ENOATTR.
Make configure detect this, and add a qemu-xattr.h file that
directs the #include to the right place.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Commit 0a039dc700 broke vga modes for
qxl-vga by loosing vga_ioport_read windup. qxl needs to hook into
vga port writes only and used to realize that by letting vga_init() do
the work for both reads and writes, then overwrite the write function.
That little detail was missed while doing the conversion ...
This patch fixes it. It also switch qxl vga ioport registration to
portio lists while being at it.
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch removes the code lines which set the subsystem id for the
emulated ac97 card to 8086:0000. Due to the device id being zero the
subsystem id isn't vaild anyway. With the patch applied the sound card
gets the default qemu subsystem id (1af4:1100) instead.
[ v2: old & broken id is maintained for -M pc-$oldqemuversion ]
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
sgabios hasn't gotten a lot of coverage since it was not shipped. For 1.0,
let's disable the automatic loading of the option ROM in -nographic
mode. We can put it back for 1.1.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Somehow, the read/write functions handle an offset that does not exist anymore.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
The first enable set/clear register (which controls the PPIs and SGIs)
is supposed to be banked for each processor. Currently it is just
handled globally and this prevents recent SMP Linux kernels from
booting, because CPU0 stops receiving localtimer interrupts when CPU1
disables them locally.
To fix this, allow the enable bits to be enabled per-cpu. For SPIs,
always enable/disable ALL_CPU_MASK.
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
With the conversion of the block layer to coroutines, bdrv_read/write
have changed to run a nested event loop that calls qemu_bh_poll.
Consequently a scheduled BH can be called while a DMA transfer handler
runs and this means that DMA_run becomes reentrant.
Devices haven't been designed to cope with that, so instead of running a
nested transfer handler just wait for the next invocation of the BH from the
main loop.
This fixes some problems with the floppy device.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* 'xtensa' of git://jcmvbkbc.spb.ru/dumb/qemu-xtensa:
xtensa_lx60: fix build date code and change memory region names
xtensa_lx60: pass kernel arguments from -append
xtensa_lx60: add FLASH support
target-xtensa: raise an exception for invalid and reserved opcodes
target-xtensa: handle cache options in the overlay tool
target-xtensa: mask out undefined bits of WINDOWSTART SR
apic id returned to guest kernel in ebx for cpuid(function=1) depends on
CPUX86State->cpuid_apic_id which gets populated after the cpuid information
is cached in the host kernel. This results in broken CPU topology in guest.
Fix this by setting cpuid_apic_id before cpuid information is passed to
the host kernel. This is done by moving the setting of cpuid_apic_id
to cpu_x86_init() where it will work for both KVM as well as TCG modes.
Acked-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Bharata B Rao <bharata.rao@gmail.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
commit ba43d28916 introduces a bug:
The stream-not-found case doesn't error out any more, instead the
code silently uses the first stream. Fix it.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
When SCSI passthrough is being used by the guest with virtio-blk, the
guest is not able to detect disk failures. This is because the status
field is expected by the guest driver to include also the msg_status,
host_status and driver_status fields, but the device is only passing
down the SCSI status.
The patch fixes this, and also makes sure that the guest always sees a
CHECK_CONDITION status when there is valid sense data.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Markus Armbruster <armbru@redhat.com> sent fixes for va_list vararg
issues in v9fs_string_alloc_printf(). It turns out the function
duplicates g_vasprintf() and can therefore be eliminated entirely.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Fix date code to uses MMDDYYYY notation.
Change memory region names to reflect specification that defines them.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
LX60 carry 4 Mbyte FLASH and 128 Kbyte SRAM, LX200 carry 16 Mbyte FLASH
and 32 Mbyte SRAM. Either of these memories may be mapped to the system
ROM region.
Select boot from FLASH if -kernel option is not specified, otherwise
boot from SRAM.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Update lnkst on link state changes so that guests can obtain this
information via reading back the LED output pin. Works for Linux but
not for guests that depend on the missing PHY.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Implement the various IO access widths according to the spec. This
specifically unbreaks word and dword access to the PROM area that is
mapped into IO space. It also drops redundant upper limit checks and
spurious "return void".
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This moves BCR defines to the common header and immediately makes use of
them to add BCR_APROMWE, replacing the open-coded write check in
pcnet_aprom_writeb.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Currently, virtio devices are usually presented to the guest as an
emulated PCI device, virtio_pci. Although the actual IO operations
are done through system memory, the configuration of the virtio device
is done through the one PCI IO space BAR that virtio_pci presents.
But PCI IO space (aka PIO) is deprecated for modern PCI devices, and
on some systems with many PCI domains accessing PIO space can be
problematic. For example on the existing PowerVM implementation of
the PAPR spec, PCI PIO access is not supported at all. We're hoping
that our KVM implementation will support PCI PIO (once we support PCI
at all), but it will probably have some irritating limitations.
This patch, therefore, extends the virtio_pci device to have a PCI
memory space (MMIO) BAR as well as the IO BAR. The MMIO BAR contains
exactly the same registers, in exactly the same layout as the existing
PIO BAR.
Because the PIO BAR is still present, existing guest drivers should
still work fine. With this change in place, future guest drivers can
check for an MMIO BAR and use that if present (falling back to PIO
when possible to support older qemu versions).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the usb-uhci device emulation to use the explicit PCI DMA
wrapper to initialize its scatter/gathjer structure. This means this
driver should not need further changes when the sglist interface is
extended to support IOMMUs.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the usb-ehci device emulation to use the explicit PCI DMA
wrapper to initialize its scatter/gathjer structure. This means this
driver should not need further changes when the sglist interface is
extended to support IOMMUs.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the PCI IDE device emulation to use the explicit PCI DMA
wrapper to initialize its scatter/gathjer structure. This means this
driver should not need further changes when the sglist interface is
extended to support IOMMUs.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the intel-hda device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the pcnet-pci device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the lsi53c895a device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the e1000 device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the es1370 device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the ac97 device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the eepro100 device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the rtl8139 device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch adds functions to pci.[ch] to perform PCI DMA operations.
At present, these are just stubs which perform directly cpu physical
memory accesses. Stubs are included which are analogous to
cpu_physical_memory_{read,write}(), the stX_phys() and ldX_phys()
functions and cpu_physical_memory_{map,unmap}().
In addition, a wrapper around qemu_sglist_init() is provided, which
also takes a PCIDevice *. It's assumed that _init() is the only
sglist function which will need wrapping, the idea being that once we
have IOMMU support whatever IOMMU context handle the wrapper derives
from the PCI device will be stored within the sglist structure for
later use.
Using these stubs, however, distinguishes PCI device DMA transactions from
other accesses to physical memory, which will allow PCI IOMMU support to
be added in one place, rather than updating every PCI driver at that time.
That is, it allows us to update individual PCI drivers to support an IOMMU
without having yet determined the details of how the IOMMU emulation will
operate. This will let us remove the most bitrot-sensitive part of an
IOMMU patch in advance.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Make the ps2 device track its ledstate so that we can migrate it.
Otherwise it gets lost across migration, and spice-server gets
confused about the actual keyboard state and sends bogus
caps/scroll/num key events. This fixes RH bug #729294
We only need to migrate the state when it is different of the default
one (0).
Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* 'ppc-next' of git://repo.or.cz/qemu/agraf: (24 commits)
pseries: Add partial support for PCI
ppc: Alter CPU state to mask out TCG unimplemented instructions as appropriate
pseries: Allow writes to KVM accelerated TCE table
KVM: PPC: Override host vmx/vsx/dfp only when information known
ppc: Fix up usermode only builds
pseries: Correct vmx/dfp handling in both KVM and TCG cases
PPC: Fail configure when libfdt is not available
ppc: Avoid decrementer related kvm exits
PPC: Disable non-440 CPUs for ppcemb target
PPC: Bump qemu-system-ppc to 64-bit physical address space
pseries: Under kvm use guest cpu = host cpu by default
ppc: Add cpu defs for POWER7 revisions 2.1 and 2.3
ppc: First cut implementation of -cpu host
ppc: Remove broken partial PVR matching
pseries: Update SLOF firmware image
pseries: Add device tree properties for VMX/VSX and DFP under kvm
ppc: Generalize the kvmppc_get_clockfreq() function
Set an invalid-bits mask for each SPE instructions
pseries: Update SLOF firmware image
pseries: Use Book3S-HV TCE acceleration capabilities
...
OpenCores 10/100 Mbps Ethernet MAC specification doesn't clearly state
whether FCS is counted in the RX frame length or not. Looks like it is.
Append zero FCS to the received frames.
Get rid of big static buffer for RX frame padding, optimize it for the
most common MINFL value range.
Set RXD_TL for the long frames only when HUGEN bit is set.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Pavel Borzenkov <pavel.borzenkov@gmail.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Some USB drivers, for example USBASPI.SYS, will skip different type of
device which has same VID/PID. The following patch helps preventing
usb-msd being skipped by the driver.
Signed-off-by: Roy Tam <roytam@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When attaching a new device we must send a wakeup request to the root
hub, otherwise the guest will not notice the new device in case the
usb hub is suspended.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
RHBZ 740547
If we migrate when the device is in vga state the guest
still believes the slots are created, and will cause operations
that reference the slots, causing a "panic: virtual address out of range"
on the first of them. Easy to see by migrating in vga mode with
a driver loaded, for instance windows cmd window in full screen mode,
and then exiting vga mode back to native mode will cause said panic.
Fixed by doing the slot recreation in post_load for vga mode as well.
Note that compat does not require any changes because it creates it's
only slot by a side effect of QXL_IO_SET_MODE.
Signed-off-by: Alon Levy <alevy@redhat.com>
The qxl renderer works only with a shared displaysurface. So better
make sure we actually have one and restore it when needed.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
spice uses negative stride value to signal the bitmap is upside down.
The qxl renderer (used for scl, vnc and screenshots) wants a positive
value because it is easier to work with. The positive value is then
stored in the very same variable, which has the drawback that the
upside-down test works only once. Fix by using two variables.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
C99 7.15.1: Each invocation of the va_start and va_copy macros shall
be matched by a corresponding invocation of the va_end macro in the
same function.
Spotted by Coverity. Harmless on the (common) systems where va_end()
does nothing.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Use QLIST_INSERT_HEAD_RCU and rcu_read_lock/unlock instead of rwlocks.
Use v9fs_synth_mutex as a write-only mutex to handle concurrent writers.
Signed-off-by: Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This patch create a synthetic file system with mount tag
v_synth when -virtfs_synth command line option is specified
in qemu. The synthetic file system can be mounted in guest
using 9p using the below command line
mount -t 9p -oversion=9p2000.L,trans=virtio v_synth <mountpint>
Synthetic file system enabled different qemu subsystem to register
callbacks for read and write events from guest. The subsystem
can create directories and files in the synthetic file system as show
in ex below
qemu_v9fs_synth_mkdir(NULL, 0777, "test2", &node);
qemu_v9fs_synth_add_file(node, 0777, "testfile",
my_test_read, NULL, NULL);
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
To implement synthetic file system in Qemu we may not really
require file descriptor and Dir *. Make generic code use
V9fsFidOpenState instead.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
A new fsdev parameter "readonly" is introduced to control accessing 9p export.
"readonly" can be used to specify the access type. By default "rw" access
is given to 9p export.
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Instantiate the PL041 audio on the Versatile Express and
Realview board models.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
This driver emulates the ARM AACI interface (PL041) connected to a LM4549 codec.
It enables audio playback for the Versatile/PB platform.
Limitations:
- Supports only a playback on one channel (Versatile/Vexpress)
- Supports only one TX FIFO in compact-mode or non-compact mode.
- Supports playback of 12, 16, 18 and 20 bits samples.
- Record is not supported.
- The PL041 is hardwired to a LM4549 codec.
Versatile/PB test build:
linux-2.6.38.5
buildroot-2010.11
alsa-lib-1.0.22
alsa-utils-1.0.22
mpg123-0.66
Qemu host: Ubuntu 10.04 in Vmware/OS X
Playback tested successfully with speaker-test/aplay/mpg123.
Signed-off-by: Mathieu Sonet <contact@elasticsheep.com>
[Peter Maydell: fixed typo in code clearing SL1RXBUSY/SL2RXBUSY
bits, as spotted by Andrzej Zaborowski]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
This patch adds a PCI bus to the pseries machine. This instantiates
the qemu generic PCI bus code, advertises a PCI host bridge in the
guest's device tree and implements the RTAS methods specified by PAPR
to access PCI config space. It also sets up the memory regions we
need to provide windows into the PCI memory and IO space, and
advertises those to the guest.
However, because qemu can't yet emulate an IOMMU, which is mandatory on
pseries, PCI devices which use DMA (i.e. most of them) will not work with
this code alone. Still, this is enough to support the virtio_pci device
(which probably _should_ use emulated PCI DMA, but is specced to use
direct hypervisor access to guest physical memory instead).
[agraf] remove typedef which could cause compile errors
Signed-off-by: Alexey Kardashevskiy <aik@au1.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Currently, when KVM is enabled, the pseries machine checks if the host
CPU supports VMX, VSX and/or DFP instructions and advertises
accordingly in the guest device tree. It does this regardless of what
CPU is selected on the command line. On the other hand, when in TCG
mode, it never advertises any of these facilities, even basic VMX
(Altivec) which is supported in TCG.
Now that we have a -cpu host option for ppc, it is fairly
straightforward to fix both problems. This patch changes the -cpu
host code to override the basic cpu spec derived from the PVR with
information queried from the host avout VMX, VSX and DFP capability.
The pseries code then uses the instruction availability advertised in
the cpu state to set the guest device tree correctly for both the KVM
and TCG cases.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
In __cpu_ppc_store_decr(), we set up a regular timer used to trigger
decrementer interrupts. This is necessary to implement the decrementer
properly under TCG, but is unnecessary under KVM (true for both Book3S-PR
and Book3S-HV KVM variants), because the kernel handles generating and
delivering decrementer exceptions.
Under kvm, in fact, the timer causes expensive and unnecessary exits from
kvm to qemu. This patch, therefore, disables setting the timer when kvm
is in use.
Signed-off-by: Anton Blanchard <anton@au1.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Now that we've implemented -cpu host for ppc, this patch updates the
pseries machine to use the host cpu as the guest cpu by default when
running under KVM. This is important because under KVM Book3S-HV the guest
cpu _cannot_ be of a different type to the host cpu (at the moment
KVM Book3S-HV will silently virtualize the host cpu instead of whatever was
requested, but in future it is likely to simply refuse to run the VM if
a cpu model other than the host's is requested).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Sufficiently recent PAPR specifications define properties "ibm,vmx"
and "ibm,dfp" on the CPU node which advertise whether the VMX vector
extensions (or the later VSX version) and/or the Decimal Floating
Point operations from IBM's recent POWER CPUs are available.
Currently we do not put these in the guest device tree and the guest
kernel will consequently assume they are not available. This is good,
because they are not supported under TCG. VMX is similar enough to
Altivec that it might be trivial to support, but VSX and DFP would
both require significant work to support in TCG.
However, when running under kvm on a host which supports these
instructions, there's no reason not to let the guest use them. This
patch, therefore, checks for the relevant support on the host CPU
and, if present, advertises them to the guest as well.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The pseries machine of qemu implements the TCE mechanism used as a
virtual IOMMU for the PAPR defined virtual IO devices. Because the
PAPR spec only defines a small DMA address space, the guest VIO
drivers need to update TCE mappings very frequently - the virtual
network device is particularly bad. This means many slow exits to
qemu to emulate the H_PUT_TCE hypercall.
Sufficiently recent kernels allow this to be mitigated by implementing
H_PUT_TCE in the host kernel. To make use of this, however, qemu
needs to initialize the necessary TCE tables, and map them into itself
so that the VIO device implementations can retrieve the mappings when
they access guest memory (which is treated as a virtual DMA
operation).
This patch adds the necessary calls to use the KVM TCE acceleration.
If the kernel does not support acceleration, or there is some other
error creating the accelerated TCE table, then it will still fall back
to full userspace TCE implementation.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
At present, using the hypervisor aware Book3S-HV KVM will only work
with qemu on POWER7 CPUs. PPC970 CPUs also have hypervisor
capability, but they lack the VRMA feature which makes assigning guest
memory easier.
In order to allow KVM Book3S-HV on PPC970, we need to specially
allocate the first chunk of guest memory (the "Real Mode Area" or
RMA), so that it is physically contiguous.
Sufficiently recent host kernels allow such contiguous RMAs to be
allocated, with a kvm capability advertising whether the feature is
available and/or necessary on this hardware. This patch enables qemu
to use this support, thus allowing kvm acceleration of pseries qemu
machines on PPC970 hardware.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
agraf: fix to use memory api
