Currently the virtio balloon device, when using the virtio-pci interface
advertises itself with PCI class code MEMORY_RAM. This is wrong; the
balloon is vaguely related to memory, but is nothing like a PCI memory
device in the meaning of the class code, and this code is not required
or suggested by the virtio PCI specification.
Worse, this patch causes problems on the pseries machine, because the
firmware, seeing this class code, advertises the device as memory in the
device tree, and then a guest kernel bug causes it to see this "memory"
before the real system memory, leading to a crash in early boot.
This patch fixes the problem by removing the bogus PCI class code on the
balloon device. The backwards compatibility PC machines get new compat
properties so that they don't change.
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Make it easier to add compat properties, by
adding macros for properties duplicated across
machine types.
Note: there could be bugs in compat properties,
this patch does not attempt to address them,
the code is bug for bug identical to the original.
Tested by: generated a preprocessed file, sorted and
compared to sorted original.
Lightly tested on x86_64.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We want the composition tree to to be in order by the time we call
qdev_init, so that a single set of the toplevel realize property can
propagate all the way down the composition tree.
This is not the case so far. Unfortunately, this is incompatible
with calling qdev_init in the constructor wrappers for devices,
so for now we need to unattach some devices that are created through
those wrappers. This will be fixed by removing qdev_init and instead
setting the toplevel realize property after machine init.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since /i440fx/piix3 is being removed from the composition tree, the
IO-APIC is placed under /i440fx. This is wrong and should be changed
as soon as the /i440fx/piix3 path is put back.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Remove the uhci and ohci init wrappers, which all wrapped a
pci_create_simple() one-liner. Switch callsites to call
pci_create_simple directly. Remove the header files where
the wrappers where declared.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Set it to true for current Qemu versions, and false for previous ones
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This patch switches pc s3 suspend over to the new infrastructure.
The cmos_s3 qemu_irq is killed, the new notifier is used instead.
The xen hack goes away with that too, the hypercall can simply be
done in a notifier function now.
This patch also makes the guest actually stay suspended instead
of leaving suspend instantly, so it is useful for more than just
testing whenever the suspend/resume cycle actually works.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Now, the pc-sysfw:rom_only property will default
to false which enables flash by default.
All pc types below pc-1.1 set rom_only to true.
This prevents flash from being enabled on these
pc machine types.
For pc-1.1 rom_only will use the default (false),
which will allow flash to be used for pc-1.1.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
To both avoid that kvm_irqchip_in_kernel always has to be paired with
kvm_enabled and that the former ends up in a function call, implement it
like the latter. This means keeping the state in a global variable and
defining kvm_irqchip_in_kernel as a preprocessor macro.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This is mostly code movement although not entirely. This makes properties part
of the Object base class which means that we can now start using Object in a
meaningful way outside of qdev.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This introduces the KVM-accelerated IOAPIC model 'kvm-ioapic' and
extends the IRQ routing setup by the 0->2 redirection when needed.
The kvm-ioapic model has a property that allows to define its GSI base
for injecting interrupts into the kernel model. This will allow to
disentangle PIC and IOAPIC pins for chipsets that support more
sophisticated IRQ routes than the PIIX3. So far the base is kept at 0,
i.e. PIC and IOAPIC share pins 0..15.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Introduce the alternative 'kvm-i8259' device model that exploits KVM
in-kernel acceleration.
The PIIX3 initialization code is furthermore extended by KVM specific
IRQ route setup. GSI injection differs in KVM mode from the user space
model. As we can dispatch ISA-range IRQs to both IOAPIC and PIC inside
the kernel, we do not need to inject them separately. This is reflected
by a KVM-specific GSI handler.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
More KVM-specific devices will come, so let's start with moving the
kvmclock into a dedicated folder.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Obviously, linking the RTC device state to the PIIX does not belong into
the common path that is shared with the isapc.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
NULL is a valid bus/device, so there is no change in behaviour.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
event_idx was introduced in 0.15 and must be disabled for all virtio-pci devices
(including virtio-balloon-pci).
Signed-off-by: Anthony Liguori <aliguori@us.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>
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>
Commit 63ffb564 broke floppy devices specified on the command line like
-drive file=...,if=none,id=floppy -global isa-fdc.driveA=floppy because it
relies on drive_get() which works only with -fda/-drive if=floppy.
This patch resembles what we're already doing for IDE, i.e. remember the floppy
device that was created and use that to extract the BlockDriverStates where
needed.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Will be required when we no longer let i8259_init allocate the PIC IRQs
but convert that chips to qdev.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
The ISA bus IRQ range is 0..15. What isa_irq_handler and IsaIrqState are
actually dealing with are the Global System Interrupts. Refactor the
code to clarify this.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
In particular, the i8259 was being initialized before the ISA bus,
leading to a crash.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
Not used yet, but at least we're provided with the correct region.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
This is based on the original fix by Hervé Poussineau: pc_memory_init
actually takes a memory region for mapping BIOS and extension ROMs. That
equals the PCI memory region if PCI is available, but must be system
memory in the ISA case.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The current implementation of PAM and the PCI holes is broken in several
ways:
- PCI BARs are not restricted to the PCI hole (a BAR may hide memory)
- PCI devices do not respect PAM (if a PCI device maps a region while
PAM maps the region to RAM, the request will be honored)
This patch fixes things by introducing a pci address space, and using
memory region aliases to represent PAM regions, SMRAM, and PCI holes.
The memory hierarchy looks something like
system_memory
|
+--- low memory alias (0-0xe0000000)
| |
| +-- ram@0
|
+--- high memory alias (0x100000000-EOM)
| |
| +-- ram@0xe0000000
|
+--- pci hole alias (end of low memory-0x100000000)
| |
| +-- pci@end-of-low-memory
|
|
+--- pam[n] (0xc0000-0xc3fff etc) (when set to pci, priority 1)
| |
| +-- pci@0xc4000 etc
|
+--- smram (0xa0000-0xbffff) (when set to pci/vga, priority 1)
|
+-- pci@0xa0000 etc
ram (simple ram region)
pci
|
+--- BARn
|
+--- VGA 0xa0000-0xbffff
|
+--- ROMs
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This lets us register BARs in the I/O address space.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This is now done sloppily, via get_system_memory(). Eventually callers
will be converted to stop using that.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
While eventually this should come from the machine initialization function,
take a short cut to avoid converting all machines now.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The unplug protocol is necessary to support PV drivers in the guest: the
drivers expect to be able to "unplug" emulated disks and nics before
initializing the Xen PV interfaces.
It is responsibility of the guest to make sure that the unplug is done
before the emulated devices or the PV interface start to be used.
We use pci_for_each_device to walk the PCI bus, identify the devices and
disks that we want to disable and dynamically unplug them.
Changes in v2:
- use PCI_CLASS constants;
- replace pci_unplug_device with qdev_unplug;
- do not import hw/ide/internal.h in xen_platform.c;
Changes in v3:
- introduce piix3-ide-xen, that support hot-unplug;
- move the unplug code to hw/ide/piix.c;
- just call qdev_unplug from xen_platform.c to unplug the IDE disks;
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Introduce a new emulated PCI device, specific to fully virtualized Xen
guests. The device is necessary for PV on HVM drivers to work.
Signed-off-by: Steven Smith <ssmith@xensource.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Compared to the last version I only added a comment to the code.
- remove i440FX-xen and i440fx_write_config_xen
we don't need to intercept pci config writes to i440FX anymore;
- introduce PIIX3-xen and piix3_write_config_xen
we do need to intercept pci config write to the PCI-ISA bridge to update
the PCI link routing;
- set the number of PIIX3-xen interrupts line to 128;
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Every set_irq call makes a Xen hypercall.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This patch introduces Xen specific call in piix_pci.
The specific part for Xen is in write_config, set_irq and get_pirq.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
