Avoid vga.chain4 mapping by constructing a PCI hole for upper
2G of the PCI space.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Use data_mem for the data mmio region, not conf_mem.
Signed-off-by: NAvi Kivity <avi@redhat.com>

This requires some amount of hoop-jumping, so that we don't
inadvertently claim port 0x3f6, which is used by ISA IDE.

The sysbus initialization path is as yet unconverted.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

The serial_mm_init path is as yet unconverted.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Slightly non-obvious with mips_jazz passing in the region
structure to populate.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

The only non-obvious part is pic_poll_read which used
"addr1 >> 7" to detect whether one referred to either
the master or slave PIC.  Instead, test this directly.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Succeeding i8259 conversion to ISA requires this.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Succeeding i8259 conversion to ISA requires this.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Succeeding i8259 conversion to ISA requires this.
Signed-off-by: NAvi Kivity <avi@redhat.com>

i8259 is an ISA device (or at least, depends on the ISA infrastructure to
register its ioport); and the ISA bus is supplied by piix4.  Later patches
make this dependency explicit.

Use qemu_irq_proxy() to stop the cycle by adding an extra layer of
indirection.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

In particular, the i8259 was being initialized before the ISA bus,
leading to a crash.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

To replace isa_init_ioport and isa_init_ioport_range
as the ISA devices are converted to the memory api.

[avi: use memory_region_size()]
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Not used yet, but at least we're provided with the correct region.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Returns the I/O address space.  Useful for implementing
PCI-ISA bridge devices.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

The property is inheritable, but only if set to true.  This is so
that memory routers can mark sections of RAM as read-only via aliases.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Add myself as co-maintainer alongside Paul Brook for the TCG ARM
guest implementation (target-arm) and the ARM dev boards (integratorcp,
realview, stellaris, versatilepb).
Acked-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
Acked-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Remove the 'tarbin' target -- it isn't used as part of the official
QEMU release process, and it's out of date (various new bios files
were never added to its list of files). It's better not to provide
it at all than to have a broken makefile target we never use or test.

(Creating a tarball by just pulling in binaries that have been installed
directly to the system you're running the build on is a bad idea anyway:
the better way to create a binary tarball would be just to install to
a temporary DESTDIR and then tar up that.)
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Now that qemu_set_fd_handler and qemu_set_fd_handler2 have different
implementations, one using qemu iohandlers and the other glib, it is not
safe to mix the two when inserting/deleting handlers.

Fixes kvm-autotest.
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

In some cases we have a circular dependency involving irqs - the irq
controller depends on a bus, which in turn depends on the irq controller.
Add qemu_irq_proxy() which acts as a passthrough, except that the target
irq may be set later on.
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

qemu-barrier.h contains a few macros implementing memory barrier
primitives used in several places throughout qemu.  However, apart
from the compiler-only barrier, the defined wmb() is correct only for
x86, or platforms which are similarly strongly ordered.

This patch addresses the FIXME about this by making the wmb() macro
arch dependent.  On x86, it remains a compiler barrier only, but with
a comment explaining in more detail the conditions under which this is
correct.  On weakly-ordered powerpc, an "eieio" instruction is used,
again with explanation of the conditions under which it is sufficient.

On other platforms, we use the __sync_synchronize() primitive,
available in sufficiently recent gcc (4.2 and after?).  This should
implement a full barrier which will be sufficient on all platforms,
although it may be overkill in some cases.  Other platforms can add
optimized versions in future if it's worth it for them.

Without proper memory barriers, it is easy to reproduce ordering
problems with virtio on powerpc; specifically, the QEMU puts new
element into the "used" ring and then updates the ring free-running
counter.  Without a barrier between these under the right
circumstances, the guest linux driver can receive an interrupt, read
the counter change but find the ring element to be handled still has
an old value, leading to an "id %u is not a head!\n" error message.
Similar problems are likely to be possible with kvm on other weakly
ordered platforms.
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The virtio code uses wmb() macros in several places, as required by the
SMP-aware virtio protocol.  However the wmb() macro is locally defined
to be a compiler barrier only.  This is probably sufficient on x86
due to its strong storage ordering model, but it certainly isn't on other
platforms, such as ppc.

In any case, qemu already has some globally defined memory barrier macros
in qemu-barrier.h.  This patch, therefore converts virtio.c to use those
barrier macros.  The macros in qemu-barrier.h are also wrong (or at least,
safe for x86 only) but this way at least there's only one place to fix
them.
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The code which tests whether gcc supports warn_unused_result was wrong.
Remove the wrong test from configure and replace it by code using
macro QEMU_GNUC_PREREQ in compiler.h.
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The macro is compiler specific and does not depend on the operating system.

Move macro QEMU_GNUC_PREREQ from osdep.h to compiler.h
and use it to simplify existing code.

host-utils.h uses this macro, so it now needs compiler.h
instead of osdep.h.
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Need to check that guest slot/device number is not > 31 or walk off
the devfn table when checking if a devfn is available or not in a guest.

before this fix, passing in an addr=abc  or addr=34,
can crash qemu, sometimes fail gracefully if data past end
of devfn table fails the availability test.

with this fix, get clean error:
Property 'pci-assign.addr' doesn't take value '34'

also tested when no addr= param passed for guest (pcicfg) address,
and that worked as well.
Signed-off-by: NDon Dutile <ddutile@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Since qapi-generated/ is a global QEMU include path, we need to make
sure it is created before anything is compiled, so do this in the
configure phase rather than via the Makefile.
Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Do not try to map against the PCI bar in the ISA version of the device.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

We need to initialize legacy_address_space during ISA VGA setup so that
the chain-4 alias can be registered properly.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

There was no HPET on ISA boxes.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.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: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

[Originally sent to qemu-kvm list, but I was redirected here]

The Capabilities Pointer is NULL, so this bit shouldn't be set. The state of
this bit doesn't appear to change any behavior on Linux/Windows versions we've
tested, but it does cause Windows' PCI/PCI Express Compliance Test to balk.

I happen to have a physical 82540EM controller, and it also sets the
Capabilities Bit, but it actually has items on the capabilities list to go
with it :)
Signed-off-by: Ndann frazier <dann.frazier@canonical.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

qemu_service_io was mainly an alias to qemu_notify_event,
currently used only by PPC for timer hack, so call
qemu_notify_event directly.
Signed-off-by: NFrediano Ziglio <freddy77@gmail.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>