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>
