vmstate: Define VARRAY with VMS_ALLOC

This allows dynamic allocation for migrating arrays.

Already existing VMSTATE_VARRAY_UINT32 requires an array to be
pre-allocated, however there are cases when the size is not known in
advance and there is no real need to enforce it.

This defines another variant of VMSTATE_VARRAY_UINT32 with WMS_ALLOC
flag which tells the receiving side to allocate memory for the array
before receiving the data.

The first user of it is a dynamic DMA window which existence and size
are totally dynamic.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

kvm: API to obtain max supported mem slots

Introduce kvm_get_max_memslots() API that can be used to obtain the
maximum number of memslots supported by KVM.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

target-ppc/fpu_helper: Fix efscmp* instructions handling

With specification at hand from the reference manual from Freescale
http://cache.nxp.com/files/32bit/doc/ref_manual/SPEPEM.pdf , I have found a fix
to efscmp* instructions handling in QEMU.

efscmp* instructions in QEMU set crD (Condition Register nibble) values as
(0b0100 << 2) = 0b10000 (consider the HELPER_SINGLE_SPE_CMP macro which left
shifts the value returned by efscmp* handler by 2 bits). A value of 0b10000 is
not correct according the to the reference manual.

The reference manual expects efscmp* instructions to return a value of 0bx1xx.
Please find attached a patch which disables left shifting in
HELPER_SINGLE_SPE_CMP macro. This macro is used by efscmp* and efstst*
instructions only. efstst* instruction handlers, in turn, call efscmp* handlers
too.

*Explanation:*
Traditionally, each crD (condition register nibble) consist of 4 bits, which is
set by comparisons as follows:
crD = W X Y Z
where
W = Less than
X = Greater than
Y = Equal to

However, efscmp* instructions being a special case return a binary result.
(efscmpeq will set the crD = 0bx1xx iff when op1 == op2 and 0bx0xx otherwise;
i.e. there is no notion of different crD values based on Less than, Greater
than and Equal to).

This effectively means that crD will store a "Greater than" comparison result
iff efscmp* instruction comparison is TRUE. Compiler exploits this feature by
checking for "Branch if Less than or Equal to" (ble instruction) OR "Branch if
Greater than" (bgt instruction) for Branch if FALSE OR Branch if TRUE
respectively after an efscmp* instruction. This can be seen in a assembly code
snippet below:

27          if (__real__ x != 3.0f || __imag__ x != 4.0f)
10000498:   lwz r10,8(r31)
1000049c:   lis r9,16448
100004a0:   efscmpeq cr7,r10,r9
100004a4:   ble- cr7,0x100004b8 <bar+60>  //jump to abort() call
100004a8:   lwz r10,12(r31)
100004ac:   lis r9,16512
100004b0:   efscmpeq cr7,r10,r9
100004b4:   bgt- cr7,0x100004bc <bar+64>  //skip abort() call
28            abort ();
100004b8:   bl 0x10000808 <abort>

Signed-off-by: Talha Imran <talha_imran@mentor.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20160606-1' into staging

target-arm queue:
 * support instruction syndrome info for data aborts from A64 to EL2
 * add HSTR_EL2 register
 * fix incorrect ESR IL bits in various syndrome register cases
 * virt: fix limit of 64-bit ACPI/ECAM PCI MMIO range
 * gicv2: RAZ/WI non-sec access to sec interrupts
 * i2c: add aspeed i2c controller
 * virt: Reject gic-version=host for non-KVM (don't segv on aarch64 host)
 * xlnx-zynqmp: Add a secure prop to en/disable ARM Security Extensions
 * xlnx-zynqmp: Support KVM on AArch64 hosts
 * ptimer: Various fixes for awkward corner cases
 * char: QOMify various ARM UART models
 * char: get rid of qemu_char_get_next_serial
 * target-arm: Fix TTBR selecting logic on AArch32 Stage 2 translation
 * zynqmp: Add the ZCU102 board

# gpg: Signature made Mon 06 Jun 2016 17:01:11 BST
# gpg:                using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"

* remotes/pmaydell/tags/pull-target-arm-20160606-1: (25 commits)
  zynqmp: Add the ZCU102 board
  target-arm: Fix TTBR selecting logic on AArch32 Stage 2 translation
  char: get rid of qemu_char_get_next_serial
  hw/char: QOM'ify xilinx_uartlite model
  hw/char: QOM'ify stm32f2xx_usart model
  hw/char: QOM'ify digic-uart model
  hw/char: QOM'ify cadence_uart model
  hw/char: QOM'ify pl011 model
  hw/ptimer: Introduce ptimer_get_limit
  hw/ptimer: Support "on the fly" timer mode switch
  hw/ptimer: Update .delta on period/freq change
  hw/ptimer: Perform counter wrap around if timer already expired
  hw/ptimer: Fix issues caused by the adjusted timer limit value
  xlnx-zynqmp: Use the in kernel GIC model for KVM runs
  xlnx-zynqmp: Delay realization of GIC until post CPU realization
  xlnx-zynqmp: Make the RPU subsystem optional
  xlnx-zynqmp: Add a secure prop to en/disable ARM Security Extensions
  hw/arm/virt: Reject gic-version=host for non-KVM
  i2c: add aspeed i2c controller
  hw/intc/gic: RAZ/WI non-sec access to sec interrupts
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

zynqmp: Add the ZCU102 board

Most Zynq UltraScale+ users will be targetting and using the ZCU102
board instead of the development focused EP108. To make our QEMU machine
names clearer add a ZCU102 machine model.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: cc82eec026b2febfca252d73362bb7084616c1ad.1464213234.git.alistair.francis@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target-arm: Fix TTBR selecting logic on AArch32 Stage 2 translation

Address size is 40-bit for the AArch32 stage 2 translation,
and t0sz can be negative (from -8 to 7),
so we need to adjust it to use the existing TTBR selecting logic.

Signed-off-by: Sergey Sorokin <afarallax@yandex.ru>
Message-id: 1464974151-1231644-1-git-send-email-afarallax@yandex.ru
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

char: get rid of qemu_char_get_next_serial

since there is no user of qemu_char_get_next_serial any more,
it's time to let it go away.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465028065-5855-7-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/char: QOM'ify xilinx_uartlite model

* drop qemu_char_get_next_serial and use chardev prop
* create xilinx_uartlite_create wrapper function to create
  xilinx_uartlite device
* change affected board code to use the new way

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465028065-5855-6-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/char: QOM'ify stm32f2xx_usart model

* drop qemu_char_get_next_serial and use chardev prop
* change affected board code to use the new way

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465028065-5855-5-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/char: QOM'ify digic-uart model

* drop qemu_char_get_next_serial and use chardev prop
* change affected board code to use the new way

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465028065-5855-4-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/char: QOM'ify cadence_uart model

* drop qemu_char_get_next_serial and use chardev prop
* create cadence_uart_create wrapper function to create
  cadence_uart_device
* change affected board code to use the new way

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465028065-5855-3-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/char: QOM'ify pl011 model

* drop qemu_char_get_next_serial and use chardev prop
* add pl011_create wrapper function to create pl011 uart device
* change affected board code to use the new way

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465028065-5855-2-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/ptimer: Introduce ptimer_get_limit

Currently ptimer users are used to store copy of the limit value, because
ptimer doesn't provide facility to retrieve the limit. Let's provide it.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 8f1fa9f90d8dbf8086fb02f3b4835eaeb4089cf6.1464367869.git.digetx@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/ptimer: Support "on the fly" timer mode switch

Allow switching between periodic <-> oneshot modes while timer is running.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: f030be6e28fbd219e1e8d22297aee367bd9af5bb.1464367869.git.digetx@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/ptimer: Update .delta on period/freq change

Delta value must be updated on period/freq change, otherwise running timer
would be restarted (counter reloaded with old delta). Only m68k/mcf520x
and arm/arm_timer devices are currently doing freq change correctly, i.e.
stopping the timer. Perform delta update to fix affected devices and
eliminate potential further mistakes.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 4987ef5fdc128bb9a744fd794d3f609135c6a39c.1464367869.git.digetx@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/ptimer: Perform counter wrap around if timer already expired

ptimer_get_count() might be called while QEMU timer already been expired.
In that case ptimer would return counter = 0, which might be undesirable
in case of polled timer. Do counter wrap around for periodic timer to keep
it distributed. In order to achieve more accurate emulation behaviour of
certain hardware, don't perform wrap around when in icount mode and return
counter = 0 in that case (that doesn't affect polled counter distribution).

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 4ce381c7d24d85d165ff251d2875d16a4b6a5c04.1464367869.git.digetx@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/ptimer: Fix issues caused by the adjusted timer limit value

Multiple issues here related to the timer with a adjusted .limit value:

1) ptimer_get_count() returns incorrect counter value for the disabled
timer after loading the counter with a small value, because adjusted limit
value is used instead of the original.

For instance:
    1) ptimer_stop(t)
    2) ptimer_set_period(t, 1)
    3) ptimer_set_limit(t, 0, 1)
    4) ptimer_get_count(t) <-- would return 10000 instead of 0

2) ptimer_get_count() might return incorrect value for the timer running
with a adjusted limit value.

For instance:
    1) ptimer_stop(t)
    2) ptimer_set_period(t, 1)
    3) ptimer_set_limit(t, 10, 1)
    4) ptimer_run(t)
    5) ptimer_get_count(t) <-- might return value > 10

3) Neither ptimer_set_period() nor ptimer_set_freq() are adjusting the
limit value, so it is still possible to make timer timeout value
arbitrary small.

For instance:
    1) ptimer_set_period(t, 10000)
    2) ptimer_set_limit(t, 1, 0)
    3) ptimer_set_period(t, 1) <-- bypass limit correction

Fix all of the above issues by adjusting timer period instead of the limit.
Perform the adjustment for periodic timer only. Use the delta value instead
of the limit to make decision whether adjustment is required, as limit could
be altered while timer is running, resulting in incorrect value returned by
ptimer_get_count.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: cd141f74f5737480ec586b9c7d18cce1d69884e2.1464367869.git.digetx@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

xlnx-zynqmp: Use the in kernel GIC model for KVM runs

Use the in kernel GIC model when running with KVM enabled.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1464173555-12800-5-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

xlnx-zynqmp: Delay realization of GIC until post CPU realization

Delay the realization of the GIC until after CPUs are
realized. This is needed for KVM as the in-kernel GIC
model will fail if it is realized with no available CPUs.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1464173555-12800-4-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

xlnx-zynqmp: Make the RPU subsystem optional

The way we currently model the RPU subsystem is of quite
limited use. In addition to that, it causes problems for
KVM and for GDB debugging.

Make the RPU optional by adding a has_rpu property and
default to having it disabled.

This changes the default setup from having the RPU to not
longer having it.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1464173555-12800-3-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

xlnx-zynqmp: Add a secure prop to en/disable ARM Security Extensions

Add a secure prop to en/disable ARM Security Extensions.
This is particularly useful for KVM runs.

Default to disabled to match the behavior of KVM.

This changes the default setup from having the ARM Security
Extensions to not longer having them.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1464173555-12800-2-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/virt: Reject gic-version=host for non-KVM

If you try to gic-version=host with TCG on a KVM aarch64 host,
qemu segfaults, since host requires KVM APIs.

Explicitly reject gic-version=host if KVM is not enabled

https://bugzilla.redhat.com/show_bug.cgi?id=1339977
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Message-id: b1b3b0dd143b7995a7f4062966b80a2cf3e3c71e.1464273085.git.crobinso@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

i2c: add aspeed i2c controller

The Aspeed AST2400 integrates a set of 14 I2C/SMBus bus controllers
directly connected to the APB bus. They can be programmed as master or
slave but the propopsed model only supports the master mode.

On the TODO list, we also have :

 - improve and harden the state machine.
 - bus recovery support (used by the Linux driver).
 - transfer mode state machine bits. this is not strictly necessary as
   it is mostly used for debug. The bus busy bit is deducted from the
   I2C core engine of qemu.
 - support of the pool buffer: 2048 bytes of internal SRAM (not used
   by the Linux driver).

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 1464704307-25178-1-git-send-email-clg@kaod.org
[PMM: removed unused functions aspeed_i2c_bus_get_state() and
 aspeed_i2c_bus_set_state()]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/intc/gic: RAZ/WI non-sec access to sec interrupts

Treat non-secure accesses to registers and bits in registers of secure
interrupts as RAZ/WI.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Message-id: 1464273945-2055-1-git-send-email-jens.wiklander@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/virt: fix limit of 64-bit ACPI/ECAM PCI MMIO range

Set the MMIO range limit field to 'base + size - 1' as required.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org>
Message-id: 1463856217-17969-1-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target-arm: Don't try to set ESR IL bit in arm_cpu_do_interrupt_aarch64()

Remove some incorrect code from arm_cpu_do_interrupt_aarch64()
which attempts to set the IL bit in the syndrome register based
on the value of env->thumb. This is wrong in several ways:
 * IL doesn't indicate Thumb-vs-ARM, it indicates instruction
   length (which may be 16 or 32 for Thumb and is always 32 for ARM)
 * not every syndrome format uses IL like this -- for some IL is
   always set, and for some it is always clear
 * the code is changing esr_el[new_el] even for interrupt entry,
   which is not supposed to modify ESR_ELx at all

Delete the code, and instead rely on the syndrome value in
env->exception.syndrome having already been set up with the
correct value of IL.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1463487258-27468-3-git-send-email-peter.maydell@linaro.org

target-arm: Set IL bit in syndromes for insn abort, watchpoint, swstep

For some exception syndrome types, the IL bit should always be set.
This includes the instruction abort, watchpoint and software step
syndrome types; add the missing ARM_EL_IL bit to the syndrome
values returned by syn_insn_abort(), syn_swstep() and syn_watchpoint().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1463487258-27468-2-git-send-email-peter.maydell@linaro.org

target-arm: A64: Create Instruction Syndromes for Data Aborts

Add support for generating the ISS (Instruction Specific Syndrome) for
Data Abort exceptions taken from AArch64.
These syndromes are used by hypervisors for example to trap and emulate
memory accesses.

We save the decoded data out-of-band with the TBs at translation time.
When exceptions hit, the extra data attached to the TB is used to
recreate the state needed to encode instruction syndromes.
This avoids the need to emit moves with every load/store.

Based on a suggestion from Peter Maydell.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1462464601-10888-2-git-send-email-edgar.iglesias@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target-arm: Add the HSTR_EL2 register

Add the Hypervisor System Trap Register for EL2.

This register is used early in the Linux boot and without it the kernel
aborts with a "Synchronous Abort" error.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: ea5aae4b10283de4705b864fe9d4bd2eaddaacae.1463174342.git.alistair.francis@xilinx.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging

readdir_r() to readdir() conversion, various minor cleanups

# gpg: Signature made Mon 06 Jun 2016 10:52:52 BST
# gpg:                using DSA key 0x02FC3AEB0101DBC2
# gpg: Good signature from "Greg Kurz <gkurz@fr.ibm.com>"
# gpg:                 aka "Greg Kurz <groug@free.fr>"
# gpg:                 aka "Greg Kurz <gkurz@linux.vnet.ibm.com>"
# gpg:                 aka "Gregory Kurz (Groug) <groug@free.fr>"
# gpg:                 aka "Gregory Kurz (Cimai Technology) <gkurz@cimai.com>"
# gpg:                 aka "Gregory Kurz (Meiosys Technology) <gkurz@meiosys.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
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# Primary key fingerprint: 2BD4 3B44 535E C0A7 9894  DBA2 02FC 3AEB 0101 DBC2

* remotes/gkurz/tags/for-upstream:
  9p: switch back to readdir()
  9p: add locking to V9fsDir
  9p: introduce the V9fsDir type
  9p: drop useless out: label
  9p: drop useless inclusion of hw/i386/pc.h
  9p/fsdev: remove obsolete references to virtio
  9p: some more cleanup in #include directives

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20160606-1' into staging

virtio-gpu: scanout fix, live migration support
vmsvga: security fixes

# gpg: Signature made Mon 06 Jun 2016 08:05:00 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-vga-20160606-1:
  virtio-gpu: add live migration support
  vmsvga: don't process more than 1024 fifo commands at once
  vmsvga: shadow fifo registers
  vmsvga: add more fifo checks
  vmsvga: move fifo sanity checks to vmsvga_fifo_length
  virtio-gpu: fix scanout rectangles

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

scsi-disk: fix reads from scsi-disk devices

Commit fcaafb1001b9c42817714dd3b2aadcfdb997b53d accidentally broke reads from
scsi-disk devices when being updated from its original form to use the new
byte-based block functions. Add the extra missing sector to offset conversion
in order to restore read functionality.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1464931021-25117-1-git-send-email-mark.cave-ayland@ilande.co.uk
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/kraxel/tags/pull-audio-20160606-1' into staging

audio: pa volume fix, some qomifying.

# gpg: Signature made Mon 06 Jun 2016 08:01:21 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-audio-20160606-1:
  hw/audio: QOM'ify milkymist-ac97.c
  hw/audio: QOM'ify intel-hda
  hw/audio: QOM cleanup for intel-hda
  hw/audio: QOM'ify cs4231.c
  audio: pa: Set volume of recording stream instead of recording device

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/rth/tags/pull-tgt-20160605' into staging

Check address ranges for disassembly

# gpg: Signature made Sun 05 Jun 2016 17:30:28 BST
# gpg:                using RSA key 0xAD1270CC4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg:                 aka "Richard Henderson <rth@redhat.com>"
# gpg:                 aka "Richard Henderson <rth@twiddle.net>"

* remotes/rth/tags/pull-tgt-20160605:
  target-*: dfilter support for in_asm

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

gdbstub: avoid busy loop while waiting for gdb

While waiting for a gdb response, or while sending an acknowledgement
there is not much to do, so do not mark the socket as non-blocking to
avoid a busy loop while paused at gdb. This only affects the user-mode
emulation (qemu-arm -g 1234 ./a.out).

Note that this issue was reported before at
https://lists.nongnu.org/archive/html/qemu-devel/2013-02/msg02277.html.

While at it, close the gdb client fd on EOF or error while reading.

Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

9p: switch back to readdir()

This patch changes the 9p code to use readdir() again instead of
readdir_r(), which is deprecated in glibc 2.24.

All the locking was put in place by a previous patch.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>

9p: add locking to V9fsDir

If several threads concurrently call readdir() with the same directory
stream pointer, it is possible that they all get a pointer to the same
dirent structure, whose content is overwritten each time readdir() is
called.

We must thus serialize accesses to the dirent structure.

This may be achieved with a mutex like below:

lock_mutex();

readdir();

// work with the dirent

unlock_mutex();

This patch adds all the locking, to prepare the switch to readdir().

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>

9p: introduce the V9fsDir type

If we are to switch back to readdir(), we need a more complex type than
DIR * to be able to serialize concurrent accesses to the directory stream.

This patch introduces a placeholder type and fixes all users.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>

9p: drop useless out: label

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>

9p: drop useless inclusion of hw/i386/pc.h

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>

9p/fsdev: remove obsolete references to virtio

Most of the 9p code is now virtio agnostic. This patch does a final cleanup:
- drop references to Virtio from the header comments
- fix includes

Also drop a couple of leading empty lines while here.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>

9p: some more cleanup in #include directives

The "9p-attr.h" header isn't needed by 9p synth and virtio 9p.

While here, also drop last references to virtio from 9p synth since it is
now transport agnostic code.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>

e1000e: Fix build with gcc 4.6.3 and ust tracing

This patch fixes used-uninitialized false
positive while compiling with ust tracing
backend plus gcc 4.6.3:

hw/net/e1000e.c: In function ‘e1000e_io_write’:
hw/net/e1000e.c:170:39: error: ‘idx’ may be used uninitialized in this function [-Werror=uninitialized]
hw/net/e1000e.c: In function ‘e1000e_io_read’:
hw/net/e1000e.c:145:35: error: ‘idx’ may be used uninitialized in this function [-Werror=uninitialized]
cc1: all warnings being treated as errors
make: *** [hw/net/e1000e.o] Error 1

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-id: 1465023763-10773-1-git-send-email-dmitry@daynix.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

virtio-gpu: add live migration support

Store some additional state for cursor and resource backing storage,
so we can write out and reload things.  Implement vmsave+vmload for
2d mode.  Continue blocking live migration in 3d/virgl mode.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1464009727-7753-1-git-send-email-kraxel@redhat.com

vmsvga: don't process more than 1024 fifo commands at once

vmsvga_fifo_run is called in regular intervals (on each display update)
and will resume where it left off.  So we can simply exit the loop,
without having to worry about how processing will continue.

Fixes: CVE-2016-4453
Cc: qemu-stable@nongnu.org
Cc: P J P <ppandit@redhat.com>
Reported-by: 李强 <liqiang6-s@360.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1464592161-18348-5-git-send-email-kraxel@redhat.com

vmsvga: shadow fifo registers

The fifo is normal ram.  So kvm vcpu threads and qemu iothread can
access the fifo in parallel without syncronization.  Which in turn
implies we can't use the fifo pointers in-place because the guest
can try changing them underneath us.  So add shadows for them, to
make sure the guest can't modify them after we've applied sanity
checks.

Fixes: CVE-2016-4454
Cc: qemu-stable@nongnu.org
Cc: P J P <ppandit@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1464592161-18348-4-git-send-email-kraxel@redhat.com

vmsvga: add more fifo checks

Make sure all fifo ptrs are within range.

Fixes: CVE-2016-4454
Cc: qemu-stable@nongnu.org
Cc: P J P <ppandit@redhat.com>
Reported-by: 李强 <liqiang6-s@360.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1464592161-18348-3-git-send-email-kraxel@redhat.com

vmsvga: move fifo sanity checks to vmsvga_fifo_length

Sanity checks are applied when the fifo is enabled by the guest
(SVGA_REG_CONFIG_DONE write).  Which doesn't help much if the guest
changes the fifo registers afterwards.  Move the checks to
vmsvga_fifo_length so they are done each time qemu is about to read
from the fifo.

Fixes: CVE-2016-4454
Cc: qemu-stable@nongnu.org
Cc: P J P <ppandit@redhat.com>
Reported-by: 李强 <liqiang6-s@360.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1464592161-18348-2-git-send-email-kraxel@redhat.com

target-*: dfilter support for in_asm

The arm target was handled by 06486077, but other targets
were ignored.  This handles all the rest which actually support
disassembly (that is, skipping moxie and tilegx).

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>

Merge remote-tracking branch 'remotes/kraxel/tags/pull-ui-20160603-1' into staging

vnc: keyboard delay, colormap support
ui: misc bugfixes

# gpg: Signature made Fri 03 Jun 2016 08:02:32 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-ui-20160603-1:
  vnc: add configurable keyboard delay
  sdl2: skip init without outputs
  vnc: Add support for color map
  SDL2: add bgrx pixel format
  gtk: fix unchecked vc dereference
  ui: spice: Exit if gl=on EGL init fails
  ui: egl: Replace fprintf with error_report

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

e1000e: Fix build with ust trace backend

ust trace backend has limitation of maximum 10
arguments per event. Traces with more arguments
cannot be compiled for this backend.

Trace e1000e_rx_rss_ip6 introduced by previous
commits has 11 arguments and fails to compile with
ust trace backend.

This patch fixes the problem by splitting this
tracepoint into two successive tracepoints with
smaller number of arguments.

For more information see comment regarding TP_ARGS
in lttng/tracepoint.h:

/*
* TP_ARGS takes tuples of type, argument separated by a comma.
* It can take up to 10 tuples (which means that less than 10 tuples is
* fine too).
* Each tuple is also separated by a comma.
*/

Build log generated by this problem:

In file included from ./trace/generated-tracers.h:9:0,
                 from /home/travis/build/qemu/qemu/include/trace.h:4,
                 from util/oslib-posix.c:36:
./trace/generated-ust-provider.h:16556:3: error: unknown type name ‘_TP_EXPROTO_Bool’
In file included from /home/travis/build/qemu/qemu/include/trace.h:4:0,
                 from util/oslib-posix.c:36:
./trace/generated-tracers.h: In function ‘trace_e1000e_rx_rss_ip6’:
./trace/generated-tracers.h:8379:431: error: expected string literal before ‘_SDT_ASM_OPERANDS_ipv6_enabled’
./trace/generated-tracers.h:8379:431: error: implicit declaration of function ‘__tracepoint_cb_qemu___e1000e_rx_rss_ip6’ [-Werror=implicit-function-declaration]
./trace/generated-tracers.h:8379:431: error: nested extern declaration of ‘__tracepoint_cb_qemu___e1000e_rx_rss_ip6’ [-Werror=nested-externs]
cc1: all warnings being treated as errors
make: *** [util/oslib-posix.o] Error 1
make: *** Waiting for unfinished jobs....
In file included from ./trace/generated-tracers.h:9:0,
                 from /home/travis/build/qemu/qemu/include/trace.h:4,
                 from util/hbitmap.c:16:
./trace/generated-ust-provider.h:16556:3: error: unknown type name ‘_TP_EXPROTO_Bool’
In file included from /home/travis/build/qemu/qemu/include/trace.h:4:0,
                 from util/hbitmap.c:16:
./trace/generated-tracers.h: In function ‘trace_e1000e_rx_rss_ip6’:
./trace/generated-tracers.h:8379:431: error: expected string literal before ‘_SDT_ASM_OPERANDS_ipv6_enabled’
./trace/generated-tracers.h:8379:431: error: implicit declaration of function ‘__tracepoint_cb_qemu___e1000e_rx_rss_ip6’ [-Werror=implicit-function-declaration]
./trace/generated-tracers.h:8379:431: error: nested extern declaration of ‘__tracepoint_cb_qemu___e1000e_rx_rss_ip6’ [-Werror=nested-externs]
cc1: all warnings being treated as errors
make: *** [util/hbitmap.o] Error 1

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Message-id: 1464894748-27803-1-git-send-email-dmitry@daynix.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/audio: QOM'ify milkymist-ac97.c

* Drop the old SysBus init function and use instance_init
* Move AUD_open_in / AUD_open_out function into realize stage

Acked-by: Michael Walle <michael@walle.cc>
Tested-by: Michael Walle <michael@walle.cc>
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1463111220-30335-5-git-send-email-zxq_yx_007@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw/audio: QOM'ify intel-hda

* use DeviceClass::realize instead of DeviceClass::init

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1463111220-30335-4-git-send-email-zxq_yx_007@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw/audio: QOM cleanup for intel-hda

drop the DO_UPCAST macro

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1463111220-30335-3-git-send-email-zxq_yx_007@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw/audio: QOM'ify cs4231.c

Drop the old SysBus init function and use instance_init

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1463111220-30335-2-git-send-email-zxq_yx_007@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio: pa: Set volume of recording stream instead of recording device

Since pulseaudio 1.0 it's possible to set the individual stream volume
rather than setting the device volume. With this, setting hardware mixer
of a emulated sound card doesn't mess up the volume configuration of the
host.

A side effect is that this limits compatible pulseaudio version to 1.0
which was released on 2011-09-27.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 78853815be2069971b89b3a2e3181837064dd8f3.1462962512.git.pkrempa@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

virtio-gpu: fix scanout rectangles

Commit "ca58b45 ui/virtio-gpu: add and use qemu_create_displaysurface_pixman"
breaks scanouts which use a region of the underlying resource only.

So, we need another way to handle the underlying issue.  Lets create a
new pixman image, grab a reference on the pixman providing the
underlying storage, hook up a destroy callback which releases the
reference.  That way regions work again and releasing the backing
storage should still be impossible thanks to the extra reference we are
holding.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 1464597655-26341-1-git-send-email-kraxel@redhat.com

vnc: add configurable keyboard delay

Limits the rate kbd events from the vnc server are forwarded to the
guest, so input devices which are typically low-bandwidth can keep
up even on bulky input.

v2: update documentation too.
v3: spell fixes.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Yang Hongyang <hongyang.yang@easystack.cn>
Message-id: 1464762150-25817-1-git-send-email-kraxel@redhat.com

sdl2: skip init without outputs

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Cole Robinson <crobinso@redhat.com>
Message-id: 1464790116-32405-1-git-send-email-kraxel@redhat.com

vnc: Add support for color map

Our current VNC code does not handle color maps (aka non-true-color) at all
and aborts if a client requests them. There are 2 major issues with this:

 1) A VNC viewer on an 8-bit X11 system may request color maps
 2) RealVNC _always_ starts requesting color maps, then moves on to full color

In order to support these 2 use cases, let's just create a fake color map
that covers exactly our normal true color 8 bit color space. That way we don't
lose anything over a client that wants true color.

Reported-by: Sascha Wehnert <swehnert@suse.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Message-id: 1464099559-20789-1-git-send-email-den@openvz.org

Actually this is a very old patch originally submitted in 2013 by
Alexander. The situation is still the same with RealVNC, it does not
connect by default to QEMU VNC. The problem is that this client is
really popular. This is better to be kludged.

Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Gerd Hoffmann <kraxel@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

SDL2: add bgrx pixel format

This patch adds support of b8g8r8x8 pixel format for SDL2.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-id: 20160517072848.4540.34695.stgit@PASHA-ISP
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

gtk: fix unchecked vc dereference

Spotted by Coverity.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1463737748-1062-1-git-send-email-kraxel@redhat.com

ui: spice: Exit if gl=on EGL init fails

The user explicitly requested spice GL, so if we know it isn't
going to work we should exit

Signed-off-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: e3789e35b16f9e3cc6f2652f91c52d88ba6d6936.1463588606.git.crobinso@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

ui: egl: Replace fprintf with error_report

Signed-off-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: c880920f6e40a506394d89dbbe1f67c63d359c17.1463588606.git.crobinso@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Thu 02 Jun 2016 07:23:18 BST using RSA key ID 398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request: (31 commits)
  Add ENET device to i.MX6 SOC.
  Add ENET/Gbps Ethernet support to FEC device
  i.MX: move FEC device to a register array structure.
  i.MX: Rename i.MX FEC defines to ENET_XXX
  i.MX: reset TX/RX descriptors when FEC is disabled.
  i.MX: Fix FEC code for ECR register reset value.
  i.MX: Fix FEC code for MDIO address selection
  i.MX: Fix FEC code for MDIO operation selection
  net: handle optional VLAN header in checksum computation.
  net: improve UDP/TCP checksum computation.
  e1000e: Introduce qtest for e1000e device
  net: Introduce e1000e device emulation
  e1000: Move out code that will be reused in e1000e
  e1000_regs: Add definitions for Intel 82574-specific bits
  vmxnet3: Use pci_dma_* API instead of cpu_physical_memory_*
  net_pkt: Extend packet abstraction as required by e1000e functionality
  rtl8139: Move more TCP definitions to common header
  net_pkt: Name vmxnet3 packet abstractions more generic
  vmxnet3: Use common MAC address tracing macros
  net: Add macros for MAC address tracing
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/famz/tags/pull-docker-20160601' into staging

v2: Fix warning due to include.
    Various temp dir/file changes.
    Don't use "find -executable" to be compatible with Mac.

# gpg: Signature made Wed 01 Jun 2016 10:30:33 BST using RSA key ID 6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
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* remotes/famz/tags/pull-docker-20160601:
  .gitignore: Ignore docker source copy
  MAINTAINERS: Add tests/docker
  docker: Add EXTRA_CONFIGURE_OPTS
  docs: Add text for tests/docker in build-system.txt
  docker: Add travis tool
  docker: Add mingw test
  docker: Add clang test
  docker: Add full test
  docker: Add quick test
  docker: Add common.rc
  docker: Add test runner
  docker: Add images
  Makefile: Rules for docker testing
  Makefile: Always include rules.mak
  rules.mak: Add "COMMA" constant
  tests: Add utilities for docker testing

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Add ENET device to i.MX6 SOC.

This adds the ENET device to the i.MX6 SOC.

This was tested by booting Linux on an Qemu i.MX6 instance and accessing
the internet from the linux guest.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

Add ENET/Gbps Ethernet support to FEC device

The ENET device (present in i.MX6) is "derived" from FEC and backward
compatible with it.

This patch adds the necessary support of the added feature in the ENET
device to allow Linux to use it (on supported processors).

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

i.MX: move FEC device to a register array structure.

This is to prepare for the ENET Gb device of the i.MX6.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

i.MX: Rename i.MX FEC defines to ENET_XXX

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

i.MX: reset TX/RX descriptors when FEC is disabled.

According to the FEC chapter of i.MX25 reference manual

RX adn TX descriptors are reseted when the FEC device is disabled through ECR.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

i.MX: Fix FEC code for ECR register reset value.

According to the FEC chapter of i.MX25 reference manual ECR register is
initialized at 0xf0000000 at reset time.

We fix the value.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

i.MX: Fix FEC code for MDIO address selection

According to the FEC chapter of i.MX25 reference manual

When writing to MMFR register, the MDIO device and adress are selected by
bit 27 to 23 and bit 22 to 18 respectively. This is a total of 10 bits
that need to be used by the Phy chip/address decoding function.

This patch fixes the number of bits used from 9 to 10.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

i.MX: Fix FEC code for MDIO operation selection

According to the FEC chapter of i.MX25 reference manual

When writing the MMFR register, bit 29 and 28 select the requested operation.
 * 10 means read operation with valid MII mgmt frame
 * 11 means read operation with non compliant MII mgmt frame
 * 01 means write operation with valid MII mgmt frame
 * 00 means write operation with non compliant MII mgmt frame

So while bit 28 does change beween read/write for valid MII mgmt frame, the
mening is inverted for non compliant MII mgmt frame.

Bit 29 on the other hand means read/write whatever the type of mgmt frame
involved.

So this patch change the operation selection from bit 28 to bit 29 as it is
more generic.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

net: handle optional VLAN header in checksum computation.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

net: improve UDP/TCP checksum computation.

 * based on Eth, UDP, TCP struct present in eth.h instead of hardcoded
   indexes and sizes.
 * based on various macros present in eth.h.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>

e1000e: Introduce qtest for e1000e device

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

net: Introduce e1000e device emulation

This patch introduces emulation for the Intel 82574 adapter, AKA e1000e.

This implementation is derived from the e1000 emulation code, and
utilizes the TX/RX packet abstractions that were initially developed for
the vmxnet3 device. Although some parts of the introduced code may be
shared with e1000, the differences are substantial enough so that the
only shared resources for the two devices are the definitions in
hw/net/e1000_regs.h.

Similarly to vmxnet3, the new device uses virtio headers for task
offloads (for backends that support virtio extensions). Usage of
virtio headers may be forcibly disabled via a boolean device property
"vnet" (which is enabled by default). In such case task offloads
will be performed in software, in the same way it is done on
backends that do not support virtio headers.

The device code is split into two parts:

  1. hw/net/e1000e.c: QEMU-specific code for a network device;
  2. hw/net/e1000e_core.[hc]: Device emulation according to the spec.

The new device name is e1000e.

Intel specifications for the 82574 controller are available at:
http://www.intel.com/content/dam/doc/datasheet/82574l-gbe-controller-datasheet.pdf

Throughput measurement results (iperf2):

                Fedora 22 guest, TCP, RX
    4 ++------------------------------------------+
      |                                           |
      |                           X   X   X   X   X
  3.5 ++          X   X   X   X                   |
      |       X                                   |
      |                                           |
    3 ++                                          |
G     |   X                                       |
b     |                                           |
/ 2.5 ++                                          |
s     |                                           |
      |                                           |
    2 ++                                          |
      |                                           |
      |                                           |
  1.5 X+                                          |
      |                                           |
      +   +   +   +   +   +   +   +   +   +   +   +
    1 ++--+---+---+---+---+---+---+---+---+---+---+
     32  64  128 256 512  1   2   4   8  16  32  64
      B   B   B   B   B   KB  KB  KB  KB KB  KB  KB
                       Buffer size

               Fedora 22 guest, TCP, TX
  18 ++-------------------------------------------+
     |                        X                   |
  16 ++                           X   X   X   X   X
     |                   X                        |
  14 ++                                           |
     |                                            |
  12 ++                                           |
G    |               X                            |
b 10 ++                                           |
/    |                                            |
s  8 ++                                           |
     |                                            |
   6 ++          X                                |
     |                                            |
   4 ++                                           |
     |       X                                    |
   2 ++  X                                        |
     X   +   +   +   +   +    +   +   +   +   +   +
   0 ++--+---+---+---+---+----+---+---+---+---+---+
    32  64  128 256 512  1    2   4   8  16  32  64
     B   B   B   B   B   KB   KB  KB  KB KB  KB  KB
                       Buffer size

                Fedora 22 guest, UDP, RX
    3 ++------------------------------------------+
      |                                           X
      |                                           |
  2.5 ++                                          |
      |                                           |
      |                                           |
    2 ++                                 X        |
G     |                                           |
b     |                                           |
/ 1.5 ++                                          |
s     |                         X                 |
      |                                           |
    1 ++                                          |
      |                                           |
      |                 X                         |
  0.5 ++                                          |
      |        X                                  |
      X        +        +       +        +        +
    0 ++-------+--------+-------+--------+--------+
     32       64       128     256      512       1
      B        B         B       B        B      KB
                       Datagram size

                Fedora 22 guest, UDP, TX
    1 ++------------------------------------------+
      |                                           X
  0.9 ++                                          |
      |                                           |
  0.8 ++                                          |
  0.7 ++                                          |
      |                                           |
G 0.6 ++                                          |
b     |                                           |
/ 0.5 ++                                          |
s     |                                  X        |
  0.4 ++                                          |
      |                                           |
  0.3 ++                                          |
  0.2 ++                        X                 |
      |                                           |
  0.1 ++                X                         |
      X        X        +       +        +        +
    0 ++-------+--------+-------+--------+--------+
     32       64       128     256      512       1
      B        B         B       B        B      KB
                       Datagram size

              Windows 2012R2 guest, TCP, RX
  3.2 ++------------------------------------------+
      |                                   X       |
    3 ++                                          |
      |                                           |
  2.8 ++                                          |
      |                                           |
  2.6 ++                              X           |
G     |   X                   X   X           X   X
b 2.4 ++      X       X                           |
/     |                                           |
s 2.2 ++                                          |
      |                                           |
    2 ++                                          |
      |           X       X                       |
  1.8 ++                                          |
      |                                           |
  1.6 X+                                          |
      +   +   +   +   +   +   +   +   +   +   +   +
  1.4 ++--+---+---+---+---+---+---+---+---+---+---+
     32  64  128 256 512  1   2   4   8  16  32  64
      B   B   B   B   B   KB  KB  KB  KB KB  KB  KB
                       Buffer size

             Windows 2012R2 guest, TCP, TX
  14 ++-------------------------------------------+
     |                                            |
     |                                        X   X
  12 ++                                           |
     |                                            |
  10 ++                                           |
     |                                            |
G    |                                            |
b  8 ++                                           |
/    |                                    X       |
s  6 ++                                           |
     |                                            |
     |                                            |
   4 ++                               X           |
     |                                            |
   2 ++                                           |
     |           X   X            X               |
     +   X   X   +   +   X    X   +   +   +   +   +
   0 X+--+---+---+---+---+----+---+---+---+---+---+
    32  64  128 256 512  1    2   4   8  16  32  64
     B   B   B   B   B   KB   KB  KB  KB KB  KB  KB
                       Buffer size

              Windows 2012R2 guest, UDP, RX
  1.6 ++------------------------------------------X
      |                                           |
  1.4 ++                                          |
      |                                           |
  1.2 ++                                          |
      |                                  X        |
      |                                           |
G   1 ++                                          |
b     |                                           |
/ 0.8 ++                                          |
s     |                                           |
  0.6 ++                        X                 |
      |                                           |
  0.4 ++                                          |
      |                 X                         |
      |                                           |
  0.2 ++       X                                  |
      X        +        +       +        +        +
    0 ++-------+--------+-------+--------+--------+
     32       64       128     256      512       1
      B        B         B       B        B      KB
                       Datagram size

              Windows 2012R2 guest, UDP, TX
  0.6 ++------------------------------------------+
      |                                           X
      |                                           |
  0.5 ++                                          |
      |                                           |
      |                                           |
  0.4 ++                                          |
G     |                                           |
b     |                                           |
/ 0.3 ++                                 X        |
s     |                                           |
      |                                           |
  0.2 ++                                          |
      |                                           |
      |                         X                 |
  0.1 ++                                          |
      |                 X                         |
      X        X        +       +        +        +
    0 ++-------+--------+-------+--------+--------+
     32       64       128     256      512       1
      B        B         B       B        B      KB
                       Datagram size

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

e1000: Move out code that will be reused in e1000e

Code that will be shared moved to a separate files.

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

e1000_regs: Add definitions for Intel 82574-specific bits

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

vmxnet3: Use pci_dma_* API instead of cpu_physical_memory_*

To make this device and network packets
abstractions ready for IOMMU.

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

net_pkt: Extend packet abstraction as required by e1000e functionality

This patch extends the TX/RX packet abstractions with features that will
be used by the e1000e device implementation.

Changes are:

  1. Support iovec lists for RX buffers
  2. Deeper RX packets parsing
  3. Loopback option for TX packets
  4. Extended VLAN headers handling
  5. RSS processing for RX packets

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

rtl8139: Move more TCP definitions to common header

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

net_pkt: Name vmxnet3 packet abstractions more generic

This patch drops "vmx" prefix from packet abstractions names
to emphasize the fact they are generic and not tied to any
specific network device.

These abstractions will be reused by e1000e emulation implementation
introduced by following patches so their names need generalization.

This patch (except renamed files, adjusted comments and changes in MAINTAINTERS)
was produced by:

git grep -lz 'vmxnet_tx_pkt' | xargs -0 perl -i'' -pE "s/vmxnet_tx_pkt/net_tx_pkt/g"
git grep -lz 'vmxnet_rx_pkt' | xargs -0 perl -i'' -pE "s/vmxnet_rx_pkt/net_rx_pkt/g"
git grep -lz 'VmxnetTxPkt' | xargs -0 perl -i'' -pE "s/VmxnetTxPkt/NetTxPkt/g"
git grep -lz 'VMXNET_TX_PKT' | xargs -0 perl -i'' -pE "s/VMXNET_TX_PKT/NET_TX_PKT/g"
git grep -lz 'VmxnetRxPkt' | xargs -0 perl -i'' -pE "s/VmxnetRxPkt/NetRxPkt/g"
git grep -lz 'VMXNET_RX_PKT' | xargs -0 perl -i'' -pE "s/VMXNET_RX_PKT/NET_RX_PKT/g"
sed -ie 's/VMXNET_/NET_/g' hw/net/vmxnet_rx_pkt.c
sed -ie 's/VMXNET_/NET_/g' hw/net/vmxnet_tx_pkt.c

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

vmxnet3: Use common MAC address tracing macros

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

net: Add macros for MAC address tracing

These macros will be used by future commits introducing
e1000e device emulation and by vmxnet3 tracing code.

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

net: Introduce Toeplitz hash calculator

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

vmxnet3: Use generic function for DSN capability definition

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

pcie: Introduce function for DSN capability creation

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

pcie: Add support for PCIe CAP v1

Added support for PCIe CAP v1, while reusing some of the existing v2
infrastructure.

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

pci: Introduce define for PM capability version 1.1

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

msix: make msix_clr_pending() visible for clients

This function will be used by e1000e device code.

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

pci: fix unaligned access in pci_xxx_quad()

Replace legacy cpu_to_le64w()/le64_to_cpup()
calls with stq_le_p()/ldq_le_p().

Motivation for this modification is that
follow up patches add utility function
pcie_dev_ser_num_init() for PCIe DSN
capability creation which uses
pci_set_quad() with a misaligned offset.

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

.gitignore: Ignore docker source copy

Signed-off-by: Fam Zheng <famz@redhat.com>

MAINTAINERS: Add tests/docker

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1464755128-32490-16-git-send-email-famz@redhat.com

docker: Add EXTRA_CONFIGURE_OPTS

Whatever passed in this variable will be appended to all
configure commands.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1464755128-32490-15-git-send-email-famz@redhat.com

docs: Add text for tests/docker in build-system.txt

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1464755128-32490-14-git-send-email-famz@redhat.com

docker: Add travis tool

The script is not prefixed with test- so it won't run with "make docker-test",
because it can take too long.

Run it with "make docker-travis@ubuntu".

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1464755128-32490-13-git-send-email-famz@redhat.com

docker: Add mingw test

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1464755128-32490-12-git-send-email-famz@redhat.com

docker: Add clang test

The (currently partially commented out) configure options are suggested
by John Snow <jsnow@redhat.com>.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1464755128-32490-11-git-send-email-famz@redhat.com