The VersatilePB's PCI controller exposes the PCI memory space to the
system via three regions controlled by the mapping control registers.
Implement this so that guests can actually use MMIO-BAR PCI cards.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

Fix the mapping of the PCI regions for the realview board, which were
all incorrect. (This was never noticed because the Linux kernel
doesn't actually include a PCI driver for the realview boards.)
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

The versatile_pci PCI controller has a set of control registers which
handle the mapping between PCI and system address spaces. Implement
these registers (though for now they have no effect since we don't
implement mapping PCI space into system memory at all).

The most natural order for our sysbus regions has the control
registers at the start, so move all the others down one.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

Implement the correct IRQ mapping for the Versatile PCI controller; it
differs between realview and versatile boards, but the previous QEMU
implementation was correct only for the first PCI card on a versatile
board, since we weren't swizzling IRQs based on the slot number.

Since this change would otherwise break any uses of PCI on Linux kernels
which have an equivalent bug (since they have effectively only been
tested against QEMU, not real hardware), we implement a mechanism
for automatically detecting those broken kernels and switching back
to the old mapping. This works by looking at the values the kernel
writes to the PCI_INTERRUPT_LINE register in the config space, which
is effectively the interrupt number the kernel expects the device
to be using.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

On real hardware the host bridge appears as a PCI device in slot 29,
so make QEMU put its host bridge in that slot too.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

Rather than overloading the system I/O space (which doesn't even make
any sense on ARM) for PCI I/O, create an memory region in the PCI
controller and use that to represent the I/O space.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

Change versatile_pci to subclass TYPE_PCI_HOST_BRIDGE and generally
handle PCI in a more QOM-like fashion.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

Update the Versatile PCI controller to use a realize function rather
than SysBusDevice::init. To reflect the fact that the 'realview_pci'
class is taking most of its implementation from 'versatile_pci' (and
to make the QOM casts work) we make 'realview_pci' a subclass of
'versatile_pci'.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

Comments in the QEMU source code claim that the version of the PCI
controller on the VersatilePB board doesn't support the PCI I/O
region, but this is incorrect; expose that region, map it in the
correct location, and drop the misleading comments.

This change removes the only currently implemented difference
between the realview-pci and versatile-pci models; however there
are other differences in not-yet-implemented functionality, so we
retain the distinction between the two device types.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

There is just one line in this source file with a hardcoded tab
indent, so just fix it.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Acked-by: NPaul Brook <paul@codesourcery.com>

We already had a test to add -march=i486 when needed.  Make the
existing test independent of vhost-net, so that it is also used
under Win32.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

We already define it in Makefile.target.  But we need to avoid a
curious double negation in order to eliminate it.
Tested-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Move -lm to the end of the line, so that it can be picked up as a
dependency by pixman in the static build case.
Reviewed-by: NPeter Maydell <peter.maydell@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

The alignment is a characteristic of the ABI, not the CPU.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Previously, this was done for target_long/ulong, and propagated to
abi_long/ulong via a typedef.  But target_long/ulong should not
have any specific alignment, it is never used to access guest
memory.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

The alignment is a characteristic of the ABI, not the CPU.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

The alignment is a characteristic of the ABI, not the CPU.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Reviewed-by: NPeter Maydell <peter.maydell@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Registers are 64-bit in size for the MIPS n32 ABI.  Define
target_elf_greg_t accordingly, and use the correct function
to do endian swaps.
Reviewed-by: NPeter Maydell <peter.maydell@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Some fields in core dumps are 32-bit in 32-or-64 environments (ppc64abi32,
sparc32plus).  Use abi_long/ulong for those.

Also, the fields of target_elf_siginfo are ints.  Use tswap32 to convert them.
Reviewed-by: NPeter Maydell <peter.maydell@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Reviewed-by: NPeter Maydell <peter.maydell@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Configure to use the DTC submodule to build libfdt when no system libfdt
is found. Prompt to install the DTC submodule if --enable-fdt is set but
no DTC can be found.

DTC has no out-of-tree build capability, so the configure will symlink
the Makefile and scripts directory in the out of tree build directory
and pass in all the needed DTC arguments to make out of tree build happen.
Ideally we fix the DTC make to support out of tree, but did it this way to
avoid commits to DTC.
Signed-off-by: NDavid Holsgrove <david.holsgrove@xilinx.com>
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Add dtc submodule as a fallback for old distros.
Picking version 1.3.0. as this is the most recently tagged stable version.
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

The cross compile CFLAGS are needed to properly build pixman (and any other
submodules). Only the EXTRA_CFLAGS set is passed to submodules not QEMU_CFLAGS,
so put the cross compile flags in EXTRA_CFLAGS instead.

Signed-off-by: Peter Crosthwaite peter.crosthwaite@xilinx.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

This remove old init and exit function as they are no longer needed.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Tested-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1365690602-22729-8-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

As the virtio-net-pci and virtio-net-s390 are switched to the new API,
we can use QOM casts.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Tested-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1365690602-22729-7-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Here the virtio-net-ccw is modified for the new API. The device
virtio-net-ccw extends virtio-ccw-device as before. It creates and
connects a virtio-net-device during the init. The properties are not modified.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Tested-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1365690602-22729-6-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Here the virtio-net-s390 is modified for the new API. The device
virtio-net-s390 extends virtio-s390-device as before. It creates and
connects a virtio-net-device during the init. The properties are not modified.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Tested-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1365690602-22729-5-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Here the virtio-net-pci is modified for the new API. The device
virtio-net-pci extends virtio-pci. It creates and connects a
virtio-net-device during the init. The properties are not changed.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Tested-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1365690602-22729-4-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Create virtio-net-device which extends virtio-device, so it can be connected on
virtio-bus.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Tested-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1365690602-22729-3-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Recent changes need two functions to VirtioDevice. This just add them
into VirtioDeviceClass.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Tested-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1365690602-22729-2-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Replace

    #pragma GCC diagnostic ignored FOO
    [Troublesome code...]
    #pragma GCC diagnostic error FOO

by

    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored FOO
    [Troublesome code...]
    #pragma GCC diagnostic pop

Broken in commit 3f4349dc, commit 092bb306, and commit c95e3080.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Tested-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1366113066-1340-1-git-send-email-armbru@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This validates some basic characteristics of fw_cfg.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Message-id: 1366123521-4330-8-git-send-email-aliguori@us.ibm.com

This tests PAM settings for the i440fx.  This test does a lot of
byte MMIO which is fairly slow with qtest today.  But the test
does complete in under 2 seconds.

We don't fully emulate PAM largely because of limitations with
KVM so we #if 0 that part of the test case.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Message-id: 1366123521-4330-7-git-send-email-aliguori@us.ibm.com

This test compares all of the default register values against the
spec.  It turns out we deviate in quite a few places.  These
places are really only visible to the BIOS though which is why
this hasn't created any problems.

The deviation actually happens in the core PCI layer so I suspect
it's not a simple fix if we really care to fix it.  For now, just
disable the affected checks.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Message-id: 1366123521-4330-6-git-send-email-aliguori@us.ibm.com

This is a very simple allocator for the PC platform.  It should
be possible to add backends for other platforms.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Message-id: 1366123521-4330-5-git-send-email-aliguori@us.ibm.com

fw_cfg is needed to get the top of memory which is necessary for
doing PCI allocation and allocating RAM for DMA.

Add a PC version of fw_cfg and enough abstraction to support other
platforms.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Message-id: 1366123521-4330-4-git-send-email-aliguori@us.ibm.com

This includes basic PCI support for the PC platform.  Enough
abstraction should be present to support non-PC platforms too.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Message-id: 1366123521-4330-3-git-send-email-aliguori@us.ibm.com