Avoid mangling iovec manually: use safe iov_*
functions.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

We know offset is 0, assert that.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Now that we know host hdr length, we don't need to
duplicate the logic in receive_hdr: caller can
figure out the offset itself.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Avoid magling iov manually: use safe iov operations
for processing packets incoming to guest.
This also removes the requirement for virtio header to
fit the first s/g entry exactly.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Avoid tweaking iovec during receive. This removes
the need to copy the vector.
Note: we currently have an evil cast in work_around_broken_dhclient
and unfortunately this patch does not fix it - just
pushes the evil cast to another place.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Add API to copy part of iovec safely.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Tracking these in device state instead of
re-calculating on each packet. No functional
changes.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Let's use PCIExpressHost with QOM.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

This allows q35 to pass/set the size of the pcie window in its update routine.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

[jbaron@redhat.com: add PCI_CLASS_SERIAL_SMBUS definition]
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Introduce pci_swizzle_map_irq_fn() for interrupt pin swizzle which is
standardized. PCI bridge swizzle is common logic, by introducing
this function duplicated swizzle logic will be avoided later.

[jbaron@redhat.com: drop opaque argument]
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Adds pci id constants which will be used by q35.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

pci capability must be in PCI space.
It can't lay in PCIe extended config space.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

PCI spec (see e.g. 6.7 Capabilities List in spec rev 3.0)
requires that each capability is DWORD aligned.
Ensure this when allocating space by rounding size up to 4.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Enable KVM PV EOI by default. You can still disable it with
-kvm_pv_eoi cpu flag. To avoid breaking cross-version migration,
enable only for qemu 1.3 (or in the future, newer) machine type.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Rather than assert, simply return PCI_INTX_DISABLED when we don't
have a pci_route_irq_fn.  PIIX already returns DISABLED for an
invalid pin, so users already deal with this state.  Users of this
interface should only be acting on an ENABLED or INVERTED return
value (though we really have no support for INVERTED).  Also
complain loudly when we hit this so we don't forget it's missing.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jan Kiszka <jan.kiszka@siemens.com>

pci-assign only uses a subset of the flexibility msi_get_message()
provides, but it's still worthwhile to use it.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

vfio-pci and pci-assign both do this on their own for setting up
direct MSI injection through KVM.  Provide a helper function for
this in MSI code.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Replace open coded version

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

* 'ppc-for-upstream' of git://repo.or.cz/qemu/agraf: (22 commits)
  PPC: pseries: Remove hack for PIO window
  PPC: e500: Map PIO space into core memory region
  xen_platform: convert PIO to new memory api read/write
  vmport: convert PIO to new memory api read/write
  serial: convert PIO to new memory api read/write
  rtl8139: convert PIO to new memory api read/write
  pckbd: convert PIO to new memory api read/write
  pc port92: convert PIO to new memory api read/write
  mc146818rtc: convert PIO to new memory api read/write
  m48t59: convert PIO to new memory api read/write
  i8254: convert PIO to new memory api read/write
  es1370: convert PIO to new memory api read/write
  virtio-pci: convert PIO to new memory api read/write
  ac97: convert PIO to new memory api read/write
  pseries: Implement qemu initiated shutdowns using EPOW events
  target-ppc: Rework storage of VPA registration state
  pseries: Don't allow duplicate registration of hcalls or RTAS calls
  Add USB option in machine options
  e500: Fix serial initialization
  PPC: 440: Emulate DCBR0
  ...

* 'queue/qmp' of git://repo.or.cz/qemu/qmp-unstable:
  migration: go to paused state after finishing incoming migration with -S
  qmp: handle stop/cont in INMIGRATE state
  hmp: fix info cpus for sparc targets

Now that all users of old_portio are gone, we can remove the hack
that enabled us to support them.

Signed-off-by: Alexander Graf <agraf@suse.de>

On PPC, we don't have PIO. So usually PIO space behind a PCI bridge is
accessible via MMIO. Do this mapping explicitly by mapping the PIO space
of our PCI bus into a memory region that lives in memory space.

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

Signed-off-by: Alexander Graf <agraf@suse.de>

At present, using 'system_powerdown' from the monitor or otherwise
instructing qemu to (cleanly) shut down a pseries guest will not work,
because we did not have a method of signalling the shutdown request to the
guest.

PAPR does include a usable mechanism for this, though it is rather more
involved than the equivalent on x86.  This involves sending an EPOW
(Environmental and POwer Warning) event through the PAPR event and error
logging mechanism, which also has a number of other functions.

This patch implements just enough of the event/error logging functionality
to be able to send a shutdown event to the guest.  At least with modern
guest kernels and a userspace that is up and running, this means that
system_powerdown from the qemu monitor should now work correctly on pseries
guests.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

With PAPR guests, hypercalls allow registration of the Virtual Processor
Area (VPA), SLB shadow and dispatch trace log (DTL), each of which allow
for certain communication between the guest and hypervisor.  Currently, we
store the addresses of the three areas and the size of the dtl in
CPUPPCState.

The SLB shadow and DTL are variable sized, with the size being retrieved
from within the registered memory area at the hypercall time.  This size
can later be overwritten with other information, however, so we need to
save the size as of registration time.  We already do this for the DTL,
but not for the SLB shadow, so this patch fixes that.

In addition, we change the storage of the VPA information to use fixed
size integer types which will make life easier for syncing this data with
KVM, which we will need in future.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

Currently the pseries machine code allows a callback to be registered
for a hypercall number twice, as long as it's the same callback the second
time.  We don't test for duplicate registrations of RTAS callbacks at all
so it will effectively be last registratiojn wins.

This was originally done because it was awkward to ensure that the
registration happened exactly once, but the code has since been
restructured so that's no longer the case.

Duplicate registration of a hypercall or RTAS call could well suggest
a duplicate initialization which could cause other problems, so this patch
makes duplicate registrations a bug, to prevent the old behaviour from
hiding other bugs.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

When -usb option is used, global varible usb_enabled is set.
And all the plaform will create one USB controller according
to this variable. In fact, global varibles make code hard
to read.

So this patch is to remove global variable usb_enabled and
add USB option in machine options. All the plaforms will get
USB option value from machine options.

USB option of machine options will be set either by:
  * -usb
  * -machine type=pseries,usb=on

Both these ways can work now. They both set USB option in
machine options. In the future, the first way will be removed.

Signed-off-by: Li Zhang <zhlcindy@linux.vnet.ibm.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>