pseries: Export find_phb() utility function for PCI code
The pseries PCI code makes use of an internal find_dev() function which
locates a PCIDevice * given a (platform specific) bus ID and device
address. Internally this needs to first locate the host bridge on which
the device resides based on the bus ID. This patch exposes that host
bridge lookup as a separate function, which we will need later in the MSI
and VFIO code.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[agraf: drop trace.h inclusion] Signed-off-by: Alexander Graf <agraf@suse.de>
The patch adds a simple helper which allocates a consecutive sequence
of IRQs calling spapr_allocate_irq for each and checks that allocated
IRQs go consequently.
The patch is required for upcoming support of MSI/MSIX on POWER.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
pseries: Separate PCI RTAS setup from common from emulation specific PCI setup
Currently the RTAS functions for handling PCI are registered from the
class init code for the PCI host bridge. That sort of makes sense
now, but will break in the future when vfio gives us multiple types of
host bridge for pseries (emulated and pass-through, at least). The
RTAS functions will be common across all host bridge types (and will
call out to different places internally depending on the type).
So, this patch moves the RTAS registration into its own function
called direct from the machine setup code.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
pseries: Rework irq assignment to avoid carrying qemu_irqs around
Currently, the interfaces in the pseries machine code for assignment
and setup of interrupts pass around qemu_irq objects. That was done
in an attempt not to be too closely linked to the specific XICS
interrupt controller. However interactions with the device tree setup
made that attempt rather futile, and XICS is part of the PAPR spec
anyway, so this really just meant we had to carry both the qemu_irq
pointers and the XICS irq numbers around.
This mess will just get worse when we add upcoming PCI MSI support,
since that will require tracking a bunch more interrupt. Therefore,
this patch reworks the spapr code to just use XICS irq numbers
(roughly equivalent to GSIs on x86) and only retrieve the qemu_irq
pointers from the XICS code when we need them (a trivial lookup).
This is a reworked and generalized version of an earlier spapr_pci
specific patch from Alexey Kardashevskiy.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[agraf: fix checkpath warning] Signed-off-by: Alexander Graf <agraf@suse.de>
David Gibson [Tue, 7 Aug 2012 16:10:31 +0000 (16:10 +0000)]
pseries: Remove extraneous prints
The pseries machine prints several messages to stderr whenever it starts up
and another whenever the vm is reset. It's not normal for qemu machines to
do this though, so this patch removes them. We can put them back
conditional on a DEBUG symbol if we really need them in future.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
This patch updates the SLOF version, introducing a number of fixes:
* add proper graphics support
* fix bugs with graphical terminal under grub2
* fix bugs in handling of 64-bit unit addresses
* fix VSCSI representation to be closer to PowerVM
* fix bugs which caused grub2 to crash
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
Also instanciate the USB keyboard and mouse when that option is used
(you can still use -device to create individual devices without all
the defaults)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Li Zhang <zhlcindy@linux.vnet.ibm.com>
[agraf: remove USB bits] Signed-off-by: Alexander Graf <agraf@suse.de>
Add one new file vga-pci.h and cleanup on all platforms
Functions pci_vga_init() and pci_cirrus_vga_init() are declared
in pc.h. That prevents other platforms (e.g. sPAPR) to use them.
This patch is to create one new file vga-pci.h and move the
declarations to vga-pci.h, so that they can be shared by
all platforms. This patch also cleans up on all platforms.
Signed-off-by: Li Zhang <zhlcindy@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Alexander Graf [Thu, 9 Aug 2012 20:57:14 +0000 (22:57 +0200)]
Revert "PPC: e500: Use new MPIC dt format"
This reverts commit 518c7fb44f2182cde943dc64f88cb2fd4e4ff6b5. It breaks
new Linux guests with SMP, because IPIs get mapped to large vectors which
our MPIC emulation does not implement.
David Gibson [Mon, 6 Aug 2012 18:44:45 +0000 (18:44 +0000)]
ppc: Fix bug in handling of PAPR hypercall exits
Currently for powerpc, kvm_arch_handle_exit() always returns 1, meaning
that its caller - kvm_cpu_exec() - will always exit immediately afterwards
to the loop in qemu_kvm_cpu_thread_fn().
There's no need to do this. Once we've handled the hypercall there's no
reason we can't go straight around and KVM_RUN again, which is what ret = 0
will signal. The only exception might be for hypercalls which affect the
state of cpu_can_run(), however the only one that might do this is H_CEDE
and for kvm that is always handled in the kernel, not qemu.
Furtherm setting ret = 0 means that when exit_requested is set from a
hypercall, we will enter KVM_RUN once more with a signal which lets the
the kernel do its internal logic to complete the hypercall with out
actually executing any more guest code. This is important if our hypercall
also triggered a reset, which previously would re-initialize everything
without completing the hypercall. This caused the kernel to get confused
because it thought the guest was still in the middle of a hypercall when
it has actually been reset.
This patch therefore changes to ret = 0, which is both a bugfix and a small
optimization.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
Scott Wood [Mon, 2 Jul 2012 13:03:21 +0000 (13:03 +0000)]
PPC: e500: add generic e500 platform
This gives the kernel a paravirtualized machine to target, without
requiring both sides to pretend to be targeting a specific board
that likely has little to do with the host in KVM scenarios. This
avoids the need to add new boards to QEMU, just to be able to
run KVM on new CPUs.
Signed-off-by: Scott Wood <scottwood@freescale.com>
[agraf: conditionalize on CONFIG_FDT] Signed-off-by: Alexander Graf <agraf@suse.de>
Scott Wood [Mon, 2 Jul 2012 13:03:20 +0000 (13:03 +0000)]
PPC: e500: split mpc8544ds machine from generic e500 code
Currently the only mpc8544ds-ism that is factored out is
toplevel compatible and model. In the future the generic e500
code is expected to become more generic.
Signed-off-by: Scott Wood <scottwood@freescale.com>
[agraf: conditionalize on CONFIG_FDT] Signed-off-by: Alexander Graf <agraf@suse.de>
Scott Wood [Mon, 2 Jul 2012 13:03:19 +0000 (13:03 +0000)]
PPC: e500: change internal references away from mpc8544ds
No functional changes -- machine is still outwardly mpc8544ds.
The references that are not changed contain mpc8544 hardware details that
need to be parameterized if/when a different e500 platform wants to
change them.
Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Scott Wood [Mon, 2 Jul 2012 13:03:18 +0000 (13:03 +0000)]
PPC: e500: rename mpc8544ds into generic file
Rename the file (with no changes other than fixing up the header paths)
in preparation for refactoring into a generic e500 platform. Also move
it into the newly created ppc/ directory.
Signed-off-by: Scott Wood <scottwood@freescale.com> Reviewed-by: Andreas Färber <afaerber@suse.de>
[agraf: conditionalize on CONFIG_FDT] Signed-off-by: Alexander Graf <agraf@suse.de>
pseries pci: spapr_populate_pci_devices renamed to spapr_populate_pci_dt
spapr_populate_pci_devices() populates the device tree only with bus
properties and has nothing to do with the devices on it as PCI BAR
allocation is done by the system firmware (SLOF).
New name - spapr_populate_pci_dt() - describes the functionality better.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
Anthony Liguori [Tue, 14 Aug 2012 20:19:50 +0000 (15:19 -0500)]
Merge remote-tracking branch 'origin/master' into staging
* origin/master:
linux-user: ARM: Ignore immediate value for svc in thumb mode
linux-user: Use init_guest_space when -R and -B are specified
linux-user: Factor out guest space probing into a function
flatload: fix bss clearing
linux-user: make host_to_target_cmsg support SO_TIMESTAMP cmsg_type
linux-user: make do_setsockopt support SOL_RAW ICMP_FILTER socket option
linux-user: pass sockaddr from host to target
x86: switch to AREG0 free mode
x86: avoid AREG0 in segmentation helpers
x86: avoid AREG0 for misc helpers
x86: use wrappers for memory access helpers
x86: avoid AREG0 for SMM helpers
x86: avoid AREG0 for SVM helpers
x86: avoid AREG0 for integer helpers
x86: avoid AREG0 for condition code helpers
x86: avoid AREG0 for FPU helpers
linux-user: Move target_to_host_errno_table[] setup out of ioctl loop
linux-user: Fix SNDCTL_DSP_MAP{IN, OUT}BUF ioctl definitions
linux-user: Fix incorrect TARGET_BLKBSZGET, TARGET_BLKBSZSET
Blue Swirl [Tue, 14 Aug 2012 19:50:22 +0000 (19:50 +0000)]
Merge branch 'linux-user.next' of git://git.linaro.org/people/pmaydell/qemu-arm
* 'linux-user.next' of git://git.linaro.org/people/pmaydell/qemu-arm:
linux-user: ARM: Ignore immediate value for svc in thumb mode
linux-user: Use init_guest_space when -R and -B are specified
linux-user: Factor out guest space probing into a function
flatload: fix bss clearing
linux-user: make host_to_target_cmsg support SO_TIMESTAMP cmsg_type
linux-user: make do_setsockopt support SOL_RAW ICMP_FILTER socket option
linux-user: pass sockaddr from host to target
linux-user: Move target_to_host_errno_table[] setup out of ioctl loop
linux-user: Fix SNDCTL_DSP_MAP{IN, OUT}BUF ioctl definitions
linux-user: Fix incorrect TARGET_BLKBSZGET, TARGET_BLKBSZSET
Alexander Graf [Tue, 29 May 2012 05:30:26 +0000 (05:30 +0000)]
linux-user: ARM: Ignore immediate value for svc in thumb mode
When running in thumb mode, Linux doesn't evaluate the immediate value
of the svc instruction, but instead just always assumes the syscall number
to be in r7.
This fixes executing go_bootstrap while building go for me.
Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
linux-user: Use init_guest_space when -R and -B are specified
Roll the code used to initialize the guest memory space when -R
or -B is used into 'init_guest_space' and then call 'init_guest_space'
from the driver. This way the reserved guest memory space can
be probed for. Calling 'mmap' just once as is currently done is not
guaranteed to succeed since the host address space validation might fail.
Signed-off-by: Meador Inge <meadori@codesourcery.com>
[PMM: Fixed minor whitespace errors.] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Mike Frysinger [Mon, 9 Jul 2012 03:04:57 +0000 (03:04 +0000)]
flatload: fix bss clearing
The current bss clear logic assumes the target mmap address and host
address are the same. Use g2h to translate from the target address
space to the host so we can call memset on it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Anthony Liguori [Mon, 13 Aug 2012 21:12:35 +0000 (16:12 -0500)]
Merge remote-tracking branch 'qmp/queue/qmp' into staging
* qmp/queue/qmp: (48 commits)
target-ppc: add implementation of query-cpu-definitions (v2)
target-i386: add implementation of query-cpu-definitions (v2)
qapi: add query-cpu-definitions command (v2)
compiler: add macro for GCC weak symbols
qapi: add query-machines command
qapi: mark QOM commands stable
qmp: introduce device-list-properties command
qmp: add SUSPEND_DISK event
qmp: qmp-events.txt: add missing doc for the SUSPEND event
qmp: qmp-events.txt: put events in alphabetical order
qmp: emit the WAKEUP event when the guest is put to run
qmp: don't emit the RESET event on wakeup from S3
scripts: qapi-commands.py: qmp-commands.h: include qdict.h
docs: writing-qmp-commands.txt: update error section
error, qerror: drop QDict member
qerror: drop qerror_table and qerror_format()
error, qerror: pass desc string to error calls
error: drop error_get_qobject()/error_set_qobject()
qemu-ga: switch to the new error format on the wire
qmp: switch to the new error format on the wire
...
Anthony Liguori [Mon, 13 Aug 2012 20:59:11 +0000 (15:59 -0500)]
Merge remote-tracking branch 'pmaydell/arm-devs.next' into staging
* pmaydell/arm-devs.next:
arm: Move some ARM devices into libhw
ssd0323: abort() instead of exit(1) on error.
hw/sd.c: make sd_wp_addr() return bool
hw/sd.c: make sd_dataready() return bool
hw/sd.c: convert binary variables to bool
hw/sd.c: introduce wrapper for conversion address to wp group
hw/sd.c: make sd_wp_addr() accept 64 bit address argument
hw/sd.c: convert wp_groups in SDState to bitfield
armv7m: Guard against no -kernel argument
hw/armv7m_nvic: Fix incorrect default for num-irqs property
Anthony Liguori [Fri, 10 Aug 2012 16:04:13 +0000 (11:04 -0500)]
qapi: add query-cpu-definitions command (v2)
This command attempts to map to the behavior of -cpu ?. Unfortunately, the
output of this command differs wildly across targets.
To accommodate this, we use a weak symbol to implement a default version of the
command that fails with a QERR_NOT_SUPPORTED error code. Targets can then
override and implement this command if it makes sense for them.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
I've decided to add a new event and make it indepedent of SHUTDOWN.
This means that the SHUTDOWN event will eventually follow the
SUSPEND_DISK event.
I've choosen this way because of two reasons:
1. Having an indepedent event makes it possible to query for its
existence by using query-events
2. In the future, we may allow the user to change what QEMU should
do as a result of the guest entering S4. So it's a good idea to
keep both events separated
Luiz Capitulino [Thu, 9 Aug 2012 14:27:30 +0000 (11:27 -0300)]
qmp: emit the WAKEUP event when the guest is put to run
Today, the WAKEUP event is emitted when a wakeup _request_ is made.
This could be the system_wakeup command, for example.
A better semantic would be to emit the event when the guest is
already running, as that's what matters in the end. This commit does
that change.
In theory, this could break compatibility. In practice, it shouldn't
happen though, as clients shouldn't rely on timing characteristics of
the events. That is, a client relying that the guest is not running
when the event arrives may break if the event arrives after the guest
is already running.
This commit also adds the missing documentation for the WAKEUP event.
Luiz Capitulino [Wed, 8 Aug 2012 20:29:17 +0000 (17:29 -0300)]
qmp: don't emit the RESET event on wakeup from S3
QEMU is basically using reset logic when waking up from S3. This
causes the QMP RESET event to be emitted, which is wrong. Also,
the runstate checks done in reset are not necessary for S3 wakeup.
Fix this by untangling wakeup from reset logic and passing
VMRESET_SILENT to qemu_system_reset() to avoid emitting the RESET
event.
Luiz Capitulino [Mon, 6 Aug 2012 14:35:22 +0000 (11:35 -0300)]
scripts: qapi-commands.py: qmp-commands.h: include qdict.h
qmp-commands.h declares several functions that have arguments of
type QDict. However, qdict.h is not included. This will cause a
build breakage when a file includes qmp-commands.h but doesn't
include qdict.h.
This commit changes all QERR_ macros to contain a human message (ie.
the desc string found in qerr_table[]) instead of a json dictionary
in string format.
Before this commit, error_set() and qerror_report() would receive
a json dictionary in string format and build a qobject from it. Now,
both function receive a human message instead and the qobject is
not built anymore.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
IMPORTANT: this BREAKS QMP's compatibility for the error response.
This commit changes QMP's wire protocol to make use of the simpler
error format introduced by previous commits.
There are two important (and mostly incompatible) changes:
1. Almost all error classes have been replaced by GenericError. The
only classes that are still supported for compatibility with
libvirt are: CommandNotFound, DeviceNotActive, KVMMissingCap,
DeviceNotFound and MigrationExpected
2. The 'data' field of the error dictionary is gone
As an example, an error response like:
{ "error": { "class": "DeviceNotRemovable",
"data": { "device": "virtio0" },
"desc": "Device 'virtio0' is not removable" } }
Will now be emitted as:
{ "error": { "class": "GenericError",
"desc": "Device 'virtio0' is not removable" } }
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
qerror: add proper ErrorClass value for QERR_ macros
This commit replaces the place holder value for the ErrorClass
argument with a proper ErrorClass value for all QERR_ macros.
All current errors are mapped to GenericError, except for errors
CommandNotFound, DeviceEncrypted, DeviceNotActive, DeviceNotFound,
KVMMissingCap and MigrationExpected, which are maintained as they
are today.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
error, qerror: add ErrorClass argument to error functions
The new argument is added to functions qerror_report() and error_set().
It's stored in Error and QError. qerror_report_err() is also updated to
take care of it.
The QERR_ macros are changed to contain a place holder value for the
new argument, so that the value is used on all current calls to
qerror_report() and error_set() (and also to initialize qerror_table[]).
Next commit will update the QERR_ macros with a proper ErrorClass
value.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
Several block/ files are relying on qerror.h being provided by
qapi-types.h. Fix this, as a future commit will change qapi-types.h
not to provide qerror.h.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
Luiz Capitulino [Mon, 6 Aug 2012 19:26:47 +0000 (16:26 -0300)]
migration: don't rely on any QERR_SOCKET_*
Use the in_progress argument for QERR_SOCKET_CONNECT_IN_PROGRESS. The
other errors are handled the same by checking if the error is set and
then calling migrate_fd_error() if it's.
It's also necessary to change inet_connect_opts() not to set
QERR_SOCKET_CONNECT_IN_PROGRESS. This error is only used by
tcp_start_outgoing_migration() and not changing it along with the
usage of in_progress would break migration.
Furthermore this commit fixes a bug. Today, there's a spurious error
report when migration succeeds:
(qemu) migrate tcp:0:4444
migrate: Connection can not be completed immediately
(qemu)
After this commit no spurious error is reported anymore.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
Today, the error message is only constructed when it's used. This commit
changes that to construct the error message when the error object is
built (ie. when the error is reported).
This simplifies the Error object.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
Today, the error message is only constructed when it's used. This commit
changes qerror to construct the error message when the error object is
built (ie. when the error is reported).
This eliminates the need of storing a pointer to qerror_table[], which
will be dropped soon, and also simplifies the code.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
qerror_abort() depends on the 'file', 'func' and 'linenr' members of
QError. However, these members are going to be dropped by the next
commit, so let's drop qerror_abort() in favor of printing an error
message to stderr plus a call to abort().
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
In the old QMP days, this code was used to find out QMP commands that
might be calling monitor_printf() down its call chain.
This is almost impossible to happen today, because the qapi converted
commands don't even have a monitor object. Besides, it's been more than
a year since I used this last time.
Let's just drop it.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
Anthony Liguori [Mon, 13 Aug 2012 14:25:48 +0000 (09:25 -0500)]
Merge remote-tracking branch 'qemu-kvm/uq/master' into staging
* qemu-kvm/uq/master:
kvm: Add documentation comment for kvm_irqchip_in_kernel()
kvm: Decouple 'GSI routing' from 'kernel irqchip'
kvm: Decouple 'MSI routing via irqfds' from 'kernel irqchip'
kvm: Decouple 'irqfds usable' from 'kernel irqchip'
kvm: Move kvm_allows_irq0_override() to target-i386, fix return type
kvm: Rename kvm_irqchip_set_irq() to kvm_set_irq()
kvm: Decouple 'async interrupt delivery' from 'kernel irqchip'
configure: Don't implicitly hardcode list of KVM architectures
kvm: Check if smp_cpus exceeds max cpus supported by kvm
Peter Maydell [Mon, 23 Jul 2012 08:07:22 +0000 (08:07 +0000)]
linux-user: Move target_to_host_errno_table[] setup out of ioctl loop
The code to initialise the target_to_host_errno_table[] array was
accidentally inside the loop through checking and initialising all
the supported ioctls. This was harmless but meant that we reinitialised the
array several hundred times on startup.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix the SNDCTL_DSP_MAP{IN,OUT}BUF ioctl definitions so that they
refer to a suitably defined target struct layout rather than hardcoding
the ioctl number. This fixes complaints from the syscall_init()
consistency check when running an x86_64-to-x86_64 linux-user qemu.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The definitions for the ioctl numbers TARGET_BLKBSZGET and
TARGET_BLKBSZSET had the wrong size parameters (they are defined
with size_t, not int, even though the ioctl implementations themselves
read and write integers). Since commit 354a0008 we now have an
ioctl wrapper definition for BLKBSZGET and so on an x86-64-to-x86-64
linux-user binary we were triggering the mismatch warning in
syscall_init().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
To be more consistent with the newer ways of error signalling. That and SIGABT
is easier to debug with than exit(1).
Signed-off-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Mitsyanko Igor [Mon, 13 Aug 2012 10:04:07 +0000 (11:04 +0100)]
hw/sd.c: make sd_dataready() return bool
For the sake of code clarity
Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Mitsyanko Igor [Mon, 13 Aug 2012 10:04:06 +0000 (11:04 +0100)]
hw/sd.c: convert binary variables to bool
Several members of SDState have type int when they actually are binary variables.
Change type of these variables to bool to improve code readability. Change SD API
to be in consistency with new variables type.
Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>