Needed for changing cpu_kick_irq() argument type to SPARCCPU.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Rename the gic_state struct to match QEMU's coding style conventions
for structure names, since the impending KVM-for-ARM patches will
create another subclass of it. This patch was created using:
  sed -i 's/gic_state/GICState/g' hw/arm_gic.c hw/arm_gic_common.c \
    hw/arm_gic_internal.h hw/armv7m_nvic.c
Acked-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

There is a gap in the reset region of the address space at offset 0x208. This
throws out all these enum values by one when translating them to address offsets.
Fixed by putting the corresponding gap in the enum as well.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Implement state save/restore for the DS1338. This requires
the usual minor adjustment of types in the state struct to
get fixed-width ones with vmstate macros.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

The 'struct tm now' field in the state structure is in fact only
ever used as a temporary (the actual RTC state is held in 'offset').
Remove it from the state structure in favour of using local variables
to avoid confusion about whether it needs to be saved on migration.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

The DS1338 datasheet documents that the current time is captured into
the secondary registers when the register pointer wraps round to zero
as well as at a START condition. Implement this.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Correct several deficiencies in the handling of the register pointer:
 * it should wrap around after 0x3f, not 0xff
 * guard against the caller handing us an out of range pointer
   (on h/w this can never happen, because only a 7 bit value is
   transferred over the I2C bus)
 * there was confusion over whether nvram[] holds only the 56 bytes
   of guest-accessible NVRAM, or also the secondary registers
   which hold the value of the clock captured at the start of a
   multibyte read. Correct to consistently be the latter, by fixing
   the array size and the offset used for NVRAM writes.
 * ds1338_send was attempting to use 'data' as both the data and
   the register offset simultaneously, which meant that writes to
   any register were broken; fix to use the register pointer.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

s->cpu_enabled is an array, so s->cpu_enabled ? "En" : "Dis" returns
"En" always. We should use s->cpu_enabled[cpu] here.
Signed-off-by: NEvgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

A missing call to qemu_set_irq() when reading the IRQ register
required SW to write to the IRQ register to acknowledge an
interrupt. With this patch the behavior is fixed:
 - Reading the interrupt register clears it and updates the timers
   interrupt status
 - Writes to the interrupt register are ignored
Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

According to the spec we must raise an interrupt when one is requested
even for non active tds.

Linux depends on this, for bulk transfers it runs an inactivity timer
to work around a bug in early uhci revisions, when we take longer then
200 ms to process a packet, this timer goes of, and as part of the
handling Linux then unlinks the qh, and relinks it after the frindex
has increased by atleast 1, the problem is Linux only checks for the
frindex increases on an interrupt, and we don't send that, causing
the qh to go inactive for more then 32 frames, at which point we
consider the packet cancelled.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Instead simple disconnect the device like host redirection does on
migration.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

As we need to create the parser at more places.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Added helper function to automatically connect SPI slaves based on the QOM child
nodes of a device. A SSI master device can call this routine to automatically
hook-up all child nodes to its SPI bus.
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: NPeter Maydell <peter.maydell@linaro.org>

Added the two SPI controllers to the zynq machine model. Attached two SPI flash
devices to each controller.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Acked-by: NPeter Maydell <peter.maydell@linaro.org>

Added device model for the Xilinx Zynq SPI controller (SPIPS).
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Acked-by: NPeter Maydell <peter.maydell@linaro.org>

Added SPI controller to the reference design, with two n25q128 spi-flashes
connected.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Acked-by: NPeter Maydell <peter.maydell@linaro.org>

Device model for xilinx XPS SPI controller (v2.0)
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>

Added device model for m25p80 style SPI flash family.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>

Added a FIFO API that can be used to create and operate byte FIFOs.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>

Removed the explicit SSI mux and wired the CS line directly up to the SSI
devices.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>

Allow multiple qdev_init_gpio_in() calls for the one device. The first call will
define GPIOs 0-N-1, the next GPIOs N- ... . Allows different GPIOs to be handled
with different handlers. Needed when two levels of the QOM class heirachy both
define GPIO functionality, as a single GPIO handler with an index selecter is
not possible.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>

Slave creation function that can be used to create an SSI slave without
qdev_init() being called. This give machine models a chance to set properties.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Acked-by: NPeter Maydell <peter.maydell@linaro.org>

Added default CS behaviour for SSI slaves. SSI devices can set a property
to enable CS behaviour which will create a GPIO on the device which is the
CS. Tristating of the bus on SSI transfers is implemented.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Acked-by: NPeter Maydell <peter.maydell@linaro.org>

Removed assertion that only one device is attached to the SSI bus.

When multiple devices are attached, all slaves have their transfer function
called for transfers. Each device is responsible for knowing whether or not its
CS is active, and if not returning 0. The returned data is the logical or of
all responses from the (mulitple) devices.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Acked-by: NPeter Maydell <peter.maydell@linaro.org>

DO_UPCAST is supposed to translate from the first member of a struct to
that struct, not from arbitrary ones. And it (usually) breaks the build
when neglecting this rule. Use container_of to fix the build breakage
and likely also the runtime behavior.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
aw: runtime behavior is actually the same, but clearly misuse of DO_UPCAST
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

Blue Swirl reports that Clang doesn't like the structure we define to
avoid dynamic allocation for a number of calls to VFIO_DEVICE_SET_IRQS.
Adding an element after a variable sized type is a GNU extension.
Switch back to dynamic allocation, which really isn't a problem since
this is only done on interrupt setup changes.

Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

Missing some unwind code.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

Take what we've learned from pci-assign and apply it to vfio-pci.
On reset, disable previous interrupt config, perform a device
reset if available, re-enable INTx, and disable memory regions on
the device to prevent continuing DMA.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

This was a misinterpretation of the spec, hardware doesn't get to
specify how many were actually enabled through this field.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

We don't seem to run into any sign extension problems, but
unsigned looks more correct.
Signed-off-by: NAlex williamson <alex.williamson@redhat.com>

Let the init function fail, just don't warn for -ENOTSUP.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

It's only ~100 lines and nobody else should be using this.
Suggested by Michael Tsirkin.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

FreeBSD doesn't like these spurious MSIs, remove them as they're
mostly paranoia anyway.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

We try to do lazy initialization of MSIX since we don't actually need
to setup anything until MSIX vectors start getting used.  This leads
to problems if MSIX is enabled, but never used (we can end up trying
to re-enable INTx while it's still enabled).  We also run into
problems trying to expand our reset function to tear down interrupts
as we can then get vector release notifications after we've released
data structures.  By making explicit initialization and teardown we
can avoid both of these problems and behave more similar to bare
metal.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

Occasionally we get regions added that overlap with existing mappings.
These always seems to be in the VGA ROM range.  VFIO returns EBUSY
for these mapping attempts.  We can try a little harder and assume
that the latest mapping is correct by removing any overlapping ranges
and retrying the original request.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

This cleans up the next patch that calls unmap from map.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

We can't afford the overhead of switching out and back into mmap mode
around each interrupt, but we can do it lazily via a timer.  On INTx
interrupt, disable the mmap'd memory regions and set a timer.  On
every interrupt, push the timer out.  If the timer expires and the
interrupt is no longer pending, switch back to mmap mode.

This has the benefit that things like graphics cards, which rarely or
never, fire an interrupt don't need manual user intervention to add
the x-intx=off parameter.  They'll just remain in mmap mode until they
trigger an interrupt, and if they don't continue to regularly fire
interrupts, they'll switch back.

The default timeout is tuned for network cards so that a ping is just
enough to keep them in non-mmap mode, where they have much better
latency.  It is tunable with an experimental option,
x-intx-mmap-timeout-ms.  A value of 0 keeps the device in non-mmap
mode after the first interrupt.

It's possible we could look at the class code of devices and come up
with reasonable per-class defaults based on expected interrupt
frequency and latency.  None of this is used for MSI interrupts and
also won't be used if we can bypass through KVM.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

nc.link_down could not be migrated, this patch updates link_down in
virtio_post_load() to keep it coincident with real link status.
Signed-off-by: NAmos Kong <akong@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@gmail.com>

This patch introduced e1000_post_load(), it will be called in the end of
migration. nc.link_down could not be migrated, this patch updates
link_down in e1000_post_load() to keep it coincident with real link
status.
Signed-off-by: NAmos Kong <akong@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@gmail.com>