2009-05-14 23:35:06 +02:00
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/*
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* Dynamic device configuration and creation.
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*
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* Copyright (c) 2009 CodeSourcery
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2009-07-16 22:47:01 +02:00
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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2009-05-14 23:35:06 +02:00
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*/
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/* The theory here is that it should be possible to create a machine without
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knowledge of specific devices. Historically board init routines have
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passed a bunch of arguments to each device, requiring the board know
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exactly which device it is dealing with. This file provides an abstract
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API for device configuration and initialization. Devices will generally
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inherit from a particular bus (e.g. PCI or I2C) rather than
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this API directly. */
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2016-01-26 19:17:29 +01:00
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|
|
#include "qemu/osdep.h"
|
2018-02-01 12:18:31 +01:00
|
|
|
#include "qapi/error.h"
|
2019-06-19 22:10:37 +02:00
|
|
|
#include "qapi/qapi-events-qdev.h"
|
2013-02-04 11:37:52 +01:00
|
|
|
#include "qapi/qmp/qerror.h"
|
2012-12-17 18:19:43 +01:00
|
|
|
#include "qapi/visitor.h"
|
2015-03-17 18:29:20 +01:00
|
|
|
#include "qemu/error-report.h"
|
2018-02-01 12:18:46 +01:00
|
|
|
#include "qemu/option.h"
|
2014-02-05 16:36:45 +01:00
|
|
|
#include "hw/hotplug.h"
|
2019-08-12 07:23:42 +02:00
|
|
|
#include "hw/irq.h"
|
2019-08-12 07:23:51 +02:00
|
|
|
#include "hw/qdev-properties.h"
|
2014-06-02 15:25:03 +02:00
|
|
|
#include "hw/boards.h"
|
2016-05-10 12:30:42 +02:00
|
|
|
#include "hw/sysbus.h"
|
2019-08-12 07:23:45 +02:00
|
|
|
#include "migration/vmstate.h"
|
2020-01-30 17:02:03 +01:00
|
|
|
#include "trace.h"
|
2009-05-14 23:35:06 +02:00
|
|
|
|
2017-03-28 11:08:52 +02:00
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|
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bool qdev_hotplug = false;
|
2011-01-04 20:37:50 +01:00
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|
|
static bool qdev_hot_added = false;
|
2017-03-28 11:22:10 +02:00
|
|
|
bool qdev_hot_removed = false;
|
2009-09-25 21:42:41 +02:00
|
|
|
|
2011-12-09 17:51:49 +01:00
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|
|
const VMStateDescription *qdev_get_vmsd(DeviceState *dev)
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|
|
|
{
|
2011-12-09 18:06:57 +01:00
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|
|
DeviceClass *dc = DEVICE_GET_CLASS(dev);
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|
|
return dc->vmsd;
|
2011-12-09 17:51:49 +01:00
|
|
|
}
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|
|
2011-12-23 22:34:39 +01:00
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|
|
static void bus_remove_child(BusState *bus, DeviceState *child)
|
2010-02-19 19:12:18 +01:00
|
|
|
{
|
2011-12-23 22:34:39 +01:00
|
|
|
BusChild *kid;
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|
|
|
|
|
|
|
QTAILQ_FOREACH(kid, &bus->children, sibling) {
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|
|
|
if (kid->child == child) {
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|
|
char name[32];
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|
|
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|
|
|
|
snprintf(name, sizeof(name), "child[%d]", kid->index);
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|
|
|
QTAILQ_REMOVE(&bus->children, kid, sibling);
|
2013-01-25 14:12:32 +01:00
|
|
|
|
2018-12-17 16:57:30 +01:00
|
|
|
bus->num_children--;
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|
|
|
|
2013-01-25 14:12:32 +01:00
|
|
|
/* This gives back ownership of kid->child back to us. */
|
2011-12-23 22:34:39 +01:00
|
|
|
object_property_del(OBJECT(bus), name, NULL);
|
2013-01-25 14:12:32 +01:00
|
|
|
object_unref(OBJECT(kid->child));
|
2011-12-23 22:34:39 +01:00
|
|
|
g_free(kid);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
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|
|
|
}
|
|
|
|
|
|
|
|
static void bus_add_child(BusState *bus, DeviceState *child)
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|
|
|
{
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|
|
|
char name[32];
|
|
|
|
BusChild *kid = g_malloc0(sizeof(*kid));
|
2010-02-19 19:12:18 +01:00
|
|
|
|
2018-12-17 16:57:30 +01:00
|
|
|
bus->num_children++;
|
2011-12-23 22:34:39 +01:00
|
|
|
kid->index = bus->max_index++;
|
|
|
|
kid->child = child;
|
2013-01-25 14:12:32 +01:00
|
|
|
object_ref(OBJECT(kid->child));
|
2011-12-12 21:29:27 +01:00
|
|
|
|
2011-12-23 22:34:39 +01:00
|
|
|
QTAILQ_INSERT_HEAD(&bus->children, kid, sibling);
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|
|
|
|
2013-01-25 14:12:32 +01:00
|
|
|
/* This transfers ownership of kid->child to the property. */
|
2011-12-23 22:34:39 +01:00
|
|
|
snprintf(name, sizeof(name), "child[%d]", kid->index);
|
|
|
|
object_property_add_link(OBJECT(bus), name,
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|
|
|
object_get_typename(OBJECT(child)),
|
2014-03-19 08:58:56 +01:00
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|
|
(Object **)&kid->child,
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|
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|
NULL, /* read-only property */
|
|
|
|
0, /* return ownership on prop deletion */
|
|
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|
NULL);
|
2011-12-23 22:34:39 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
void qdev_set_parent_bus(DeviceState *dev, BusState *bus)
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|
|
|
{
|
hw/core/qdev: handle parent bus change regarding resettable
In qdev_set_parent_bus(), when changing the parent bus of a
realized device, if the source and destination buses are not in the
same reset state, some adaptations are required. This patch adds
needed call to resettable_change_parent() to make sure a device reset
state stays coherent with its parent bus.
The addition is a no-op if:
1. the device being parented is not realized.
2. the device is realized, but both buses are not under reset.
Case 2 means that as long as qdev_set_parent_bus() is called
during the machine realization procedure (which is before the
machine reset so nothing is in reset), it is a no op.
There are 52 call sites of qdev_set_parent_bus(). All but one fall
into the no-op case:
+ 29 trivial calls related to virtio (in hw/{s390x,display,virtio}/
{vhost,virtio}-xxx.c) to set a vdev(or vgpu) composing device
parent bus just before realizing the same vdev(vgpu).
+ hw/core/qdev.c: when creating a device in qdev_try_create()
+ hw/core/sysbus.c: when initializing a device in the sysbus
+ hw/i386/amd_iommu.c: before realizing AMDVIState/pci
+ hw/isa/piix4.c: before realizing PIIX4State/rtc
+ hw/misc/auxbus.c: when creating an AUXBus
+ hw/misc/auxbus.c: when creating an AUXBus child
+ hw/misc/macio/macio.c: when initializing a MACIOState child
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/pmu
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/cuda
+ hw/net/virtio-net.c: Used for migration when using the failover
mechanism to migration a vfio-pci/net. It is
a no-op because at this point the device is
already on the bus.
+ hw/pci-host/designware.c: before realizing DesignwarePCIEHost/root
+ hw/pci-host/gpex.c: before realizing GPEXHost/root
+ hw/pci-host/prep.c: when initialiazing PREPPCIState/pci_dev
+ hw/pci-host/q35.c: before realizing Q35PCIHost/mch
+ hw/pci-host/versatile.c: when initializing PCIVPBState/pci_dev
+ hw/pci-host/xilinx-pcie.c: before realizing XilinxPCIEHost/root
+ hw/s390x/event-facility.c: when creating SCLPEventFacility/
TYPE_SCLP_QUIESCE
+ hw/s390x/event-facility.c: ditto with SCLPEventFacility/
TYPE_SCLP_CPU_HOTPLUG
+ hw/s390x/sclp.c: Not trivial because it is called on a SLCPDevice
just after realizing it. Ok because at this point the destination
bus (sysbus) is not in reset; the realize step is before the
machine reset.
+ hw/sd/core.c: Not OK. Used in sdbus_reparent_card(). See below.
+ hw/ssi/ssi.c: Used to put spi slave on spi bus and connect the cs
line in ssi_auto_connect_slave(). Ok because this function is only
used in realize step in hw/ssi/aspeed_smc.ci, hw/ssi/imx_spi.c,
hw/ssi/mss-spi.c, hw/ssi/xilinx_spi.c and hw/ssi/xilinx_spips.c.
+ hw/xen/xen-legacy-backend.c: when creating a XenLegacyDevice device
+ qdev-monitor.c: in device hotplug creation procedure before realize
Note that this commit alone will have no effect, right now there is no
use of resettable API to reset anything. So a bus will never be tagged
as in-reset by this same API.
The one place where side-effect will occurs is in hw/sd/core.c in
sdbus_reparent_card(). This function is only used in the raspi machines,
including during the sysbus reset procedure. This case will be
carrefully handled when doing the multiple phase reset transition.
Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200123132823.1117486-7-damien.hedde@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-30 17:02:04 +01:00
|
|
|
BusState *old_parent_bus = dev->parent_bus;
|
2017-02-28 15:55:08 +01:00
|
|
|
|
hw/core/qdev: handle parent bus change regarding resettable
In qdev_set_parent_bus(), when changing the parent bus of a
realized device, if the source and destination buses are not in the
same reset state, some adaptations are required. This patch adds
needed call to resettable_change_parent() to make sure a device reset
state stays coherent with its parent bus.
The addition is a no-op if:
1. the device being parented is not realized.
2. the device is realized, but both buses are not under reset.
Case 2 means that as long as qdev_set_parent_bus() is called
during the machine realization procedure (which is before the
machine reset so nothing is in reset), it is a no op.
There are 52 call sites of qdev_set_parent_bus(). All but one fall
into the no-op case:
+ 29 trivial calls related to virtio (in hw/{s390x,display,virtio}/
{vhost,virtio}-xxx.c) to set a vdev(or vgpu) composing device
parent bus just before realizing the same vdev(vgpu).
+ hw/core/qdev.c: when creating a device in qdev_try_create()
+ hw/core/sysbus.c: when initializing a device in the sysbus
+ hw/i386/amd_iommu.c: before realizing AMDVIState/pci
+ hw/isa/piix4.c: before realizing PIIX4State/rtc
+ hw/misc/auxbus.c: when creating an AUXBus
+ hw/misc/auxbus.c: when creating an AUXBus child
+ hw/misc/macio/macio.c: when initializing a MACIOState child
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/pmu
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/cuda
+ hw/net/virtio-net.c: Used for migration when using the failover
mechanism to migration a vfio-pci/net. It is
a no-op because at this point the device is
already on the bus.
+ hw/pci-host/designware.c: before realizing DesignwarePCIEHost/root
+ hw/pci-host/gpex.c: before realizing GPEXHost/root
+ hw/pci-host/prep.c: when initialiazing PREPPCIState/pci_dev
+ hw/pci-host/q35.c: before realizing Q35PCIHost/mch
+ hw/pci-host/versatile.c: when initializing PCIVPBState/pci_dev
+ hw/pci-host/xilinx-pcie.c: before realizing XilinxPCIEHost/root
+ hw/s390x/event-facility.c: when creating SCLPEventFacility/
TYPE_SCLP_QUIESCE
+ hw/s390x/event-facility.c: ditto with SCLPEventFacility/
TYPE_SCLP_CPU_HOTPLUG
+ hw/s390x/sclp.c: Not trivial because it is called on a SLCPDevice
just after realizing it. Ok because at this point the destination
bus (sysbus) is not in reset; the realize step is before the
machine reset.
+ hw/sd/core.c: Not OK. Used in sdbus_reparent_card(). See below.
+ hw/ssi/ssi.c: Used to put spi slave on spi bus and connect the cs
line in ssi_auto_connect_slave(). Ok because this function is only
used in realize step in hw/ssi/aspeed_smc.ci, hw/ssi/imx_spi.c,
hw/ssi/mss-spi.c, hw/ssi/xilinx_spi.c and hw/ssi/xilinx_spips.c.
+ hw/xen/xen-legacy-backend.c: when creating a XenLegacyDevice device
+ qdev-monitor.c: in device hotplug creation procedure before realize
Note that this commit alone will have no effect, right now there is no
use of resettable API to reset anything. So a bus will never be tagged
as in-reset by this same API.
The one place where side-effect will occurs is in hw/sd/core.c in
sdbus_reparent_card(). This function is only used in the raspi machines,
including during the sysbus reset procedure. This case will be
carrefully handled when doing the multiple phase reset transition.
Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200123132823.1117486-7-damien.hedde@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-30 17:02:04 +01:00
|
|
|
if (old_parent_bus) {
|
2020-01-30 17:02:03 +01:00
|
|
|
trace_qdev_update_parent_bus(dev, object_get_typename(OBJECT(dev)),
|
hw/core/qdev: handle parent bus change regarding resettable
In qdev_set_parent_bus(), when changing the parent bus of a
realized device, if the source and destination buses are not in the
same reset state, some adaptations are required. This patch adds
needed call to resettable_change_parent() to make sure a device reset
state stays coherent with its parent bus.
The addition is a no-op if:
1. the device being parented is not realized.
2. the device is realized, but both buses are not under reset.
Case 2 means that as long as qdev_set_parent_bus() is called
during the machine realization procedure (which is before the
machine reset so nothing is in reset), it is a no op.
There are 52 call sites of qdev_set_parent_bus(). All but one fall
into the no-op case:
+ 29 trivial calls related to virtio (in hw/{s390x,display,virtio}/
{vhost,virtio}-xxx.c) to set a vdev(or vgpu) composing device
parent bus just before realizing the same vdev(vgpu).
+ hw/core/qdev.c: when creating a device in qdev_try_create()
+ hw/core/sysbus.c: when initializing a device in the sysbus
+ hw/i386/amd_iommu.c: before realizing AMDVIState/pci
+ hw/isa/piix4.c: before realizing PIIX4State/rtc
+ hw/misc/auxbus.c: when creating an AUXBus
+ hw/misc/auxbus.c: when creating an AUXBus child
+ hw/misc/macio/macio.c: when initializing a MACIOState child
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/pmu
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/cuda
+ hw/net/virtio-net.c: Used for migration when using the failover
mechanism to migration a vfio-pci/net. It is
a no-op because at this point the device is
already on the bus.
+ hw/pci-host/designware.c: before realizing DesignwarePCIEHost/root
+ hw/pci-host/gpex.c: before realizing GPEXHost/root
+ hw/pci-host/prep.c: when initialiazing PREPPCIState/pci_dev
+ hw/pci-host/q35.c: before realizing Q35PCIHost/mch
+ hw/pci-host/versatile.c: when initializing PCIVPBState/pci_dev
+ hw/pci-host/xilinx-pcie.c: before realizing XilinxPCIEHost/root
+ hw/s390x/event-facility.c: when creating SCLPEventFacility/
TYPE_SCLP_QUIESCE
+ hw/s390x/event-facility.c: ditto with SCLPEventFacility/
TYPE_SCLP_CPU_HOTPLUG
+ hw/s390x/sclp.c: Not trivial because it is called on a SLCPDevice
just after realizing it. Ok because at this point the destination
bus (sysbus) is not in reset; the realize step is before the
machine reset.
+ hw/sd/core.c: Not OK. Used in sdbus_reparent_card(). See below.
+ hw/ssi/ssi.c: Used to put spi slave on spi bus and connect the cs
line in ssi_auto_connect_slave(). Ok because this function is only
used in realize step in hw/ssi/aspeed_smc.ci, hw/ssi/imx_spi.c,
hw/ssi/mss-spi.c, hw/ssi/xilinx_spi.c and hw/ssi/xilinx_spips.c.
+ hw/xen/xen-legacy-backend.c: when creating a XenLegacyDevice device
+ qdev-monitor.c: in device hotplug creation procedure before realize
Note that this commit alone will have no effect, right now there is no
use of resettable API to reset anything. So a bus will never be tagged
as in-reset by this same API.
The one place where side-effect will occurs is in hw/sd/core.c in
sdbus_reparent_card(). This function is only used in the raspi machines,
including during the sysbus reset procedure. This case will be
carrefully handled when doing the multiple phase reset transition.
Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200123132823.1117486-7-damien.hedde@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-30 17:02:04 +01:00
|
|
|
old_parent_bus, object_get_typename(OBJECT(old_parent_bus)),
|
2020-01-30 17:02:03 +01:00
|
|
|
OBJECT(bus), object_get_typename(OBJECT(bus)));
|
|
|
|
/*
|
|
|
|
* Keep a reference to the device while it's not plugged into
|
2017-02-28 15:55:08 +01:00
|
|
|
* any bus, to avoid it potentially evaporating when it is
|
|
|
|
* dereffed in bus_remove_child().
|
hw/core/qdev: handle parent bus change regarding resettable
In qdev_set_parent_bus(), when changing the parent bus of a
realized device, if the source and destination buses are not in the
same reset state, some adaptations are required. This patch adds
needed call to resettable_change_parent() to make sure a device reset
state stays coherent with its parent bus.
The addition is a no-op if:
1. the device being parented is not realized.
2. the device is realized, but both buses are not under reset.
Case 2 means that as long as qdev_set_parent_bus() is called
during the machine realization procedure (which is before the
machine reset so nothing is in reset), it is a no op.
There are 52 call sites of qdev_set_parent_bus(). All but one fall
into the no-op case:
+ 29 trivial calls related to virtio (in hw/{s390x,display,virtio}/
{vhost,virtio}-xxx.c) to set a vdev(or vgpu) composing device
parent bus just before realizing the same vdev(vgpu).
+ hw/core/qdev.c: when creating a device in qdev_try_create()
+ hw/core/sysbus.c: when initializing a device in the sysbus
+ hw/i386/amd_iommu.c: before realizing AMDVIState/pci
+ hw/isa/piix4.c: before realizing PIIX4State/rtc
+ hw/misc/auxbus.c: when creating an AUXBus
+ hw/misc/auxbus.c: when creating an AUXBus child
+ hw/misc/macio/macio.c: when initializing a MACIOState child
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/pmu
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/cuda
+ hw/net/virtio-net.c: Used for migration when using the failover
mechanism to migration a vfio-pci/net. It is
a no-op because at this point the device is
already on the bus.
+ hw/pci-host/designware.c: before realizing DesignwarePCIEHost/root
+ hw/pci-host/gpex.c: before realizing GPEXHost/root
+ hw/pci-host/prep.c: when initialiazing PREPPCIState/pci_dev
+ hw/pci-host/q35.c: before realizing Q35PCIHost/mch
+ hw/pci-host/versatile.c: when initializing PCIVPBState/pci_dev
+ hw/pci-host/xilinx-pcie.c: before realizing XilinxPCIEHost/root
+ hw/s390x/event-facility.c: when creating SCLPEventFacility/
TYPE_SCLP_QUIESCE
+ hw/s390x/event-facility.c: ditto with SCLPEventFacility/
TYPE_SCLP_CPU_HOTPLUG
+ hw/s390x/sclp.c: Not trivial because it is called on a SLCPDevice
just after realizing it. Ok because at this point the destination
bus (sysbus) is not in reset; the realize step is before the
machine reset.
+ hw/sd/core.c: Not OK. Used in sdbus_reparent_card(). See below.
+ hw/ssi/ssi.c: Used to put spi slave on spi bus and connect the cs
line in ssi_auto_connect_slave(). Ok because this function is only
used in realize step in hw/ssi/aspeed_smc.ci, hw/ssi/imx_spi.c,
hw/ssi/mss-spi.c, hw/ssi/xilinx_spi.c and hw/ssi/xilinx_spips.c.
+ hw/xen/xen-legacy-backend.c: when creating a XenLegacyDevice device
+ qdev-monitor.c: in device hotplug creation procedure before realize
Note that this commit alone will have no effect, right now there is no
use of resettable API to reset anything. So a bus will never be tagged
as in-reset by this same API.
The one place where side-effect will occurs is in hw/sd/core.c in
sdbus_reparent_card(). This function is only used in the raspi machines,
including during the sysbus reset procedure. This case will be
carrefully handled when doing the multiple phase reset transition.
Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200123132823.1117486-7-damien.hedde@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-30 17:02:04 +01:00
|
|
|
* Also keep the ref of the parent bus until the end, so that
|
|
|
|
* we can safely call resettable_change_parent() below.
|
2017-02-28 15:55:08 +01:00
|
|
|
*/
|
|
|
|
object_ref(OBJECT(dev));
|
|
|
|
bus_remove_child(dev->parent_bus, dev);
|
|
|
|
}
|
2011-12-22 22:14:27 +01:00
|
|
|
dev->parent_bus = bus;
|
2013-01-25 14:12:35 +01:00
|
|
|
object_ref(OBJECT(bus));
|
2011-12-23 22:34:39 +01:00
|
|
|
bus_add_child(bus, dev);
|
hw/core/qdev: handle parent bus change regarding resettable
In qdev_set_parent_bus(), when changing the parent bus of a
realized device, if the source and destination buses are not in the
same reset state, some adaptations are required. This patch adds
needed call to resettable_change_parent() to make sure a device reset
state stays coherent with its parent bus.
The addition is a no-op if:
1. the device being parented is not realized.
2. the device is realized, but both buses are not under reset.
Case 2 means that as long as qdev_set_parent_bus() is called
during the machine realization procedure (which is before the
machine reset so nothing is in reset), it is a no op.
There are 52 call sites of qdev_set_parent_bus(). All but one fall
into the no-op case:
+ 29 trivial calls related to virtio (in hw/{s390x,display,virtio}/
{vhost,virtio}-xxx.c) to set a vdev(or vgpu) composing device
parent bus just before realizing the same vdev(vgpu).
+ hw/core/qdev.c: when creating a device in qdev_try_create()
+ hw/core/sysbus.c: when initializing a device in the sysbus
+ hw/i386/amd_iommu.c: before realizing AMDVIState/pci
+ hw/isa/piix4.c: before realizing PIIX4State/rtc
+ hw/misc/auxbus.c: when creating an AUXBus
+ hw/misc/auxbus.c: when creating an AUXBus child
+ hw/misc/macio/macio.c: when initializing a MACIOState child
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/pmu
+ hw/misc/macio/macio.c: before realizing NewWorldMacIOState/cuda
+ hw/net/virtio-net.c: Used for migration when using the failover
mechanism to migration a vfio-pci/net. It is
a no-op because at this point the device is
already on the bus.
+ hw/pci-host/designware.c: before realizing DesignwarePCIEHost/root
+ hw/pci-host/gpex.c: before realizing GPEXHost/root
+ hw/pci-host/prep.c: when initialiazing PREPPCIState/pci_dev
+ hw/pci-host/q35.c: before realizing Q35PCIHost/mch
+ hw/pci-host/versatile.c: when initializing PCIVPBState/pci_dev
+ hw/pci-host/xilinx-pcie.c: before realizing XilinxPCIEHost/root
+ hw/s390x/event-facility.c: when creating SCLPEventFacility/
TYPE_SCLP_QUIESCE
+ hw/s390x/event-facility.c: ditto with SCLPEventFacility/
TYPE_SCLP_CPU_HOTPLUG
+ hw/s390x/sclp.c: Not trivial because it is called on a SLCPDevice
just after realizing it. Ok because at this point the destination
bus (sysbus) is not in reset; the realize step is before the
machine reset.
+ hw/sd/core.c: Not OK. Used in sdbus_reparent_card(). See below.
+ hw/ssi/ssi.c: Used to put spi slave on spi bus and connect the cs
line in ssi_auto_connect_slave(). Ok because this function is only
used in realize step in hw/ssi/aspeed_smc.ci, hw/ssi/imx_spi.c,
hw/ssi/mss-spi.c, hw/ssi/xilinx_spi.c and hw/ssi/xilinx_spips.c.
+ hw/xen/xen-legacy-backend.c: when creating a XenLegacyDevice device
+ qdev-monitor.c: in device hotplug creation procedure before realize
Note that this commit alone will have no effect, right now there is no
use of resettable API to reset anything. So a bus will never be tagged
as in-reset by this same API.
The one place where side-effect will occurs is in hw/sd/core.c in
sdbus_reparent_card(). This function is only used in the raspi machines,
including during the sysbus reset procedure. This case will be
carrefully handled when doing the multiple phase reset transition.
Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200123132823.1117486-7-damien.hedde@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-30 17:02:04 +01:00
|
|
|
if (dev->realized) {
|
|
|
|
resettable_change_parent(OBJECT(dev), OBJECT(bus),
|
|
|
|
OBJECT(old_parent_bus));
|
|
|
|
}
|
|
|
|
if (old_parent_bus) {
|
|
|
|
object_unref(OBJECT(old_parent_bus));
|
2017-02-28 15:55:08 +01:00
|
|
|
object_unref(OBJECT(dev));
|
|
|
|
}
|
2010-02-19 19:12:18 +01:00
|
|
|
}
|
|
|
|
|
2015-06-19 16:17:22 +02:00
|
|
|
/* Create a new device. This only initializes the device state
|
|
|
|
structure and allows properties to be set. The device still needs
|
|
|
|
to be realized. See qdev-core.h. */
|
2009-05-23 01:05:19 +02:00
|
|
|
DeviceState *qdev_create(BusState *bus, const char *name)
|
2011-02-05 15:34:25 +01:00
|
|
|
{
|
|
|
|
DeviceState *dev;
|
|
|
|
|
|
|
|
dev = qdev_try_create(bus, name);
|
|
|
|
if (!dev) {
|
2011-08-04 00:49:04 +02:00
|
|
|
if (bus) {
|
error: Strip trailing '\n' from error string arguments (again)
Commit 6daf194d and be62a2eb got rid of a bunch, but they keep coming
back. Tracked down with this Coccinelle semantic patch:
@r@
expression err, eno, cls, fmt;
position p;
@@
(
error_report(fmt, ...)@p
|
error_set(err, cls, fmt, ...)@p
|
error_set_errno(err, eno, cls, fmt, ...)@p
|
error_setg(err, fmt, ...)@p
|
error_setg_errno(err, eno, fmt, ...)@p
)
@script:python@
fmt << r.fmt;
p << r.p;
@@
if "\\n" in str(fmt):
print "%s:%s:%s:%s" % (p[0].file, p[0].line, p[0].column, fmt)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1360354939-10994-4-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-08 21:22:16 +01:00
|
|
|
error_report("Unknown device '%s' for bus '%s'", name,
|
2012-12-04 14:19:34 +01:00
|
|
|
object_get_typename(OBJECT(bus)));
|
2011-08-04 00:49:04 +02:00
|
|
|
} else {
|
error: Strip trailing '\n' from error string arguments (again)
Commit 6daf194d and be62a2eb got rid of a bunch, but they keep coming
back. Tracked down with this Coccinelle semantic patch:
@r@
expression err, eno, cls, fmt;
position p;
@@
(
error_report(fmt, ...)@p
|
error_set(err, cls, fmt, ...)@p
|
error_set_errno(err, eno, cls, fmt, ...)@p
|
error_setg(err, fmt, ...)@p
|
error_setg_errno(err, eno, fmt, ...)@p
)
@script:python@
fmt << r.fmt;
p << r.p;
@@
if "\\n" in str(fmt):
print "%s:%s:%s:%s" % (p[0].file, p[0].line, p[0].column, fmt)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1360354939-10994-4-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-08 21:22:16 +01:00
|
|
|
error_report("Unknown device '%s' for default sysbus", name);
|
2011-08-04 00:49:04 +02:00
|
|
|
}
|
2013-03-22 09:44:14 +01:00
|
|
|
abort();
|
2011-02-05 15:34:25 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return dev;
|
|
|
|
}
|
|
|
|
|
2012-03-27 18:38:47 +02:00
|
|
|
DeviceState *qdev_try_create(BusState *bus, const char *type)
|
2009-05-14 23:35:06 +02:00
|
|
|
{
|
2011-12-22 22:14:27 +01:00
|
|
|
DeviceState *dev;
|
|
|
|
|
2012-03-27 18:38:47 +02:00
|
|
|
if (object_class_by_name(type) == NULL) {
|
2012-02-17 02:47:44 +01:00
|
|
|
return NULL;
|
|
|
|
}
|
2012-03-27 18:38:47 +02:00
|
|
|
dev = DEVICE(object_new(type));
|
2011-12-22 22:14:27 +01:00
|
|
|
if (!dev) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2009-06-30 14:12:08 +02:00
|
|
|
if (!bus) {
|
2016-05-10 12:30:42 +02:00
|
|
|
/* Assert that the device really is a SysBusDevice before
|
|
|
|
* we put it onto the sysbus. Non-sysbus devices which aren't
|
|
|
|
* being put onto a bus should be created with object_new(TYPE_FOO),
|
|
|
|
* not qdev_create(NULL, TYPE_FOO).
|
|
|
|
*/
|
|
|
|
g_assert(object_dynamic_cast(OBJECT(dev), TYPE_SYS_BUS_DEVICE));
|
2010-12-16 19:33:22 +01:00
|
|
|
bus = sysbus_get_default();
|
2009-06-30 14:12:08 +02:00
|
|
|
}
|
|
|
|
|
2011-12-22 22:14:27 +01:00
|
|
|
qdev_set_parent_bus(dev, bus);
|
2013-01-25 14:12:37 +01:00
|
|
|
object_unref(OBJECT(dev));
|
2011-12-22 22:14:27 +01:00
|
|
|
return dev;
|
2009-05-14 23:35:06 +02:00
|
|
|
}
|
|
|
|
|
2018-12-06 13:10:34 +01:00
|
|
|
static QTAILQ_HEAD(, DeviceListener) device_listeners
|
2015-01-20 12:05:07 +01:00
|
|
|
= QTAILQ_HEAD_INITIALIZER(device_listeners);
|
|
|
|
|
|
|
|
enum ListenerDirection { Forward, Reverse };
|
|
|
|
|
|
|
|
#define DEVICE_LISTENER_CALL(_callback, _direction, _args...) \
|
|
|
|
do { \
|
|
|
|
DeviceListener *_listener; \
|
|
|
|
\
|
|
|
|
switch (_direction) { \
|
|
|
|
case Forward: \
|
|
|
|
QTAILQ_FOREACH(_listener, &device_listeners, link) { \
|
|
|
|
if (_listener->_callback) { \
|
|
|
|
_listener->_callback(_listener, ##_args); \
|
|
|
|
} \
|
|
|
|
} \
|
|
|
|
break; \
|
|
|
|
case Reverse: \
|
|
|
|
QTAILQ_FOREACH_REVERSE(_listener, &device_listeners, \
|
2018-12-06 13:10:34 +01:00
|
|
|
link) { \
|
2015-01-20 12:05:07 +01:00
|
|
|
if (_listener->_callback) { \
|
|
|
|
_listener->_callback(_listener, ##_args); \
|
|
|
|
} \
|
|
|
|
} \
|
|
|
|
break; \
|
|
|
|
default: \
|
|
|
|
abort(); \
|
|
|
|
} \
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
static int device_listener_add(DeviceState *dev, void *opaque)
|
|
|
|
{
|
|
|
|
DEVICE_LISTENER_CALL(realize, Forward, dev);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void device_listener_register(DeviceListener *listener)
|
|
|
|
{
|
|
|
|
QTAILQ_INSERT_TAIL(&device_listeners, listener, link);
|
|
|
|
|
|
|
|
qbus_walk_children(sysbus_get_default(), NULL, NULL, device_listener_add,
|
|
|
|
NULL, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
void device_listener_unregister(DeviceListener *listener)
|
|
|
|
{
|
|
|
|
QTAILQ_REMOVE(&device_listeners, listener, link);
|
|
|
|
}
|
|
|
|
|
2019-10-29 12:48:55 +01:00
|
|
|
bool qdev_should_hide_device(QemuOpts *opts)
|
|
|
|
{
|
|
|
|
int rc = -1;
|
|
|
|
DeviceListener *listener;
|
|
|
|
|
|
|
|
QTAILQ_FOREACH(listener, &device_listeners, link) {
|
|
|
|
if (listener->should_be_hidden) {
|
|
|
|
/*
|
|
|
|
* should_be_hidden_will return
|
|
|
|
* 1 if device matches opts and it should be hidden
|
|
|
|
* 0 if device matches opts and should not be hidden
|
|
|
|
* -1 if device doesn't match ops
|
|
|
|
*/
|
|
|
|
rc = listener->should_be_hidden(listener, opts);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rc > 0) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return rc > 0;
|
|
|
|
}
|
|
|
|
|
2010-05-15 13:32:40 +02:00
|
|
|
void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
|
|
|
|
int required_for_version)
|
|
|
|
{
|
2013-01-09 03:58:10 +01:00
|
|
|
assert(!dev->realized);
|
2010-05-15 13:32:40 +02:00
|
|
|
dev->instance_id_alias = alias_id;
|
|
|
|
dev->alias_required_for_version = required_for_version;
|
|
|
|
}
|
|
|
|
|
2017-11-02 11:10:06 +01:00
|
|
|
HotplugHandler *qdev_get_machine_hotplug_handler(DeviceState *dev)
|
|
|
|
{
|
|
|
|
MachineState *machine;
|
|
|
|
MachineClass *mc;
|
|
|
|
Object *m_obj = qdev_get_machine();
|
|
|
|
|
|
|
|
if (object_dynamic_cast(m_obj, TYPE_MACHINE)) {
|
|
|
|
machine = MACHINE(m_obj);
|
|
|
|
mc = MACHINE_GET_CLASS(machine);
|
|
|
|
if (mc->get_hotplug_handler) {
|
|
|
|
return mc->get_hotplug_handler(machine, dev);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2019-09-16 10:07:16 +02:00
|
|
|
bool qdev_hotplug_allowed(DeviceState *dev, Error **errp)
|
|
|
|
{
|
|
|
|
MachineState *machine;
|
|
|
|
MachineClass *mc;
|
|
|
|
Object *m_obj = qdev_get_machine();
|
|
|
|
|
|
|
|
if (object_dynamic_cast(m_obj, TYPE_MACHINE)) {
|
|
|
|
machine = MACHINE(m_obj);
|
|
|
|
mc = MACHINE_GET_CLASS(machine);
|
|
|
|
if (mc->hotplug_allowed) {
|
|
|
|
return mc->hotplug_allowed(machine, dev, errp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2019-02-28 13:28:49 +01:00
|
|
|
HotplugHandler *qdev_get_bus_hotplug_handler(DeviceState *dev)
|
|
|
|
{
|
|
|
|
if (dev->parent_bus) {
|
|
|
|
return dev->parent_bus->hotplug_handler;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2015-04-27 10:47:21 +02:00
|
|
|
HotplugHandler *qdev_get_hotplug_handler(DeviceState *dev)
|
2014-09-26 11:28:41 +02:00
|
|
|
{
|
2019-02-28 13:28:48 +01:00
|
|
|
HotplugHandler *hotplug_ctrl = qdev_get_machine_hotplug_handler(dev);
|
2014-09-26 11:28:41 +02:00
|
|
|
|
2019-02-28 13:28:48 +01:00
|
|
|
if (hotplug_ctrl == NULL && dev->parent_bus) {
|
2019-02-28 13:28:49 +01:00
|
|
|
hotplug_ctrl = qdev_get_bus_hotplug_handler(dev);
|
2014-09-26 11:28:41 +02:00
|
|
|
}
|
|
|
|
return hotplug_ctrl;
|
|
|
|
}
|
|
|
|
|
2020-01-30 17:02:03 +01:00
|
|
|
static int qdev_prereset(DeviceState *dev, void *opaque)
|
|
|
|
{
|
|
|
|
trace_qdev_reset_tree(dev, object_get_typename(OBJECT(dev)));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int qbus_prereset(BusState *bus, void *opaque)
|
|
|
|
{
|
|
|
|
trace_qbus_reset_tree(bus, object_get_typename(OBJECT(bus)));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-11-19 10:55:59 +01:00
|
|
|
static int qdev_reset_one(DeviceState *dev, void *opaque)
|
|
|
|
{
|
2020-01-30 17:02:03 +01:00
|
|
|
device_legacy_reset(dev);
|
2010-11-19 10:55:59 +01:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-11-19 10:56:00 +01:00
|
|
|
static int qbus_reset_one(BusState *bus, void *opaque)
|
|
|
|
{
|
2012-05-02 09:00:20 +02:00
|
|
|
BusClass *bc = BUS_GET_CLASS(bus);
|
2020-01-30 17:02:03 +01:00
|
|
|
trace_qbus_reset(bus, object_get_typename(OBJECT(bus)));
|
2012-05-02 09:00:20 +02:00
|
|
|
if (bc->reset) {
|
2013-12-06 17:54:27 +01:00
|
|
|
bc->reset(bus);
|
2010-11-19 10:56:00 +01:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-11-19 10:56:01 +01:00
|
|
|
void qdev_reset_all(DeviceState *dev)
|
|
|
|
{
|
2020-01-30 17:02:03 +01:00
|
|
|
trace_qdev_reset_all(dev, object_get_typename(OBJECT(dev)));
|
|
|
|
qdev_walk_children(dev, qdev_prereset, qbus_prereset,
|
|
|
|
qdev_reset_one, qbus_reset_one, NULL);
|
2010-11-19 10:56:01 +01:00
|
|
|
}
|
|
|
|
|
2015-07-21 08:32:07 +02:00
|
|
|
void qdev_reset_all_fn(void *opaque)
|
|
|
|
{
|
|
|
|
qdev_reset_all(DEVICE(opaque));
|
|
|
|
}
|
|
|
|
|
2013-01-10 15:49:07 +01:00
|
|
|
void qbus_reset_all(BusState *bus)
|
|
|
|
{
|
2020-01-30 17:02:03 +01:00
|
|
|
trace_qbus_reset_all(bus, object_get_typename(OBJECT(bus)));
|
|
|
|
qbus_walk_children(bus, qdev_prereset, qbus_prereset,
|
|
|
|
qdev_reset_one, qbus_reset_one, NULL);
|
2013-01-10 15:49:07 +01:00
|
|
|
}
|
|
|
|
|
2010-12-20 06:33:35 +01:00
|
|
|
void qbus_reset_all_fn(void *opaque)
|
|
|
|
{
|
|
|
|
BusState *bus = opaque;
|
2013-01-10 15:49:07 +01:00
|
|
|
qbus_reset_all(bus);
|
2010-12-20 06:33:35 +01:00
|
|
|
}
|
|
|
|
|
2020-01-30 17:02:04 +01:00
|
|
|
void device_cold_reset(DeviceState *dev)
|
|
|
|
{
|
|
|
|
resettable_reset(OBJECT(dev), RESET_TYPE_COLD);
|
|
|
|
}
|
|
|
|
|
2020-01-30 17:02:04 +01:00
|
|
|
bool device_is_in_reset(DeviceState *dev)
|
|
|
|
{
|
|
|
|
return resettable_is_in_reset(OBJECT(dev));
|
|
|
|
}
|
|
|
|
|
|
|
|
static ResettableState *device_get_reset_state(Object *obj)
|
|
|
|
{
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
return &dev->reset;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void device_reset_child_foreach(Object *obj, ResettableChildCallback cb,
|
|
|
|
void *opaque, ResetType type)
|
|
|
|
{
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
BusState *bus;
|
|
|
|
|
|
|
|
QLIST_FOREACH(bus, &dev->child_bus, sibling) {
|
|
|
|
cb(OBJECT(bus), opaque, type);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-09-25 21:42:41 +02:00
|
|
|
/* can be used as ->unplug() callback for the simple cases */
|
2014-09-26 11:28:21 +02:00
|
|
|
void qdev_simple_device_unplug_cb(HotplugHandler *hotplug_dev,
|
|
|
|
DeviceState *dev, Error **errp)
|
|
|
|
{
|
qdev: Let the hotplug_handler_unplug() caller delete the device
When unplugging a device, at one point the device will be destroyed
via object_unparent(). This will, one the one hand, unrealize the
removed device hierarchy, and on the other hand, destroy/free the
device hierarchy.
When chaining hotplug handlers, we want to overwrite a bus hotplug
handler by the machine hotplug handler, to be able to perform
some part of the plug/unplug and to forward the calls to the bus hotplug
handler.
For now, the bus hotplug handler would trigger an object_unparent(), not
allowing us to perform some unplug action on a device after we forwarded
the call to the bus hotplug handler. The device would be gone at that
point.
machine_unplug_handler(dev)
/* eventually do unplug stuff */
bus_unplug_handler(dev)
/* dev is gone, we can't do more unplug stuff */
So move the object_unparent() to the original caller of the unplug. For
now, keep the unrealize() at the original places of the
object_unparent(). For implicitly chained hotplug handlers (e.g. pc
code calling acpi hotplug handlers), the object_unparent() has to be
done by the outermost caller. So when calling hotplug_handler_unplug()
from inside an unplug handler, nothing is to be done.
hotplug_handler_unplug(dev) -> calls machine_unplug_handler()
machine_unplug_handler(dev) {
/* eventually do unplug stuff */
bus_unplug_handler(dev) -> calls unrealize(dev)
/* we can do more unplug stuff but device already unrealized */
}
object_unparent(dev)
In the long run, every unplug action should be factored out of the
unrealize() function into the unplug handler (especially for PCI). Then
we can get rid of the additonal unrealize() calls and object_unparent()
will properly unrealize the device hierarchy after the device has been
unplugged.
hotplug_handler_unplug(dev) -> calls machine_unplug_handler()
machine_unplug_handler(dev) {
/* eventually do unplug stuff */
bus_unplug_handler(dev) -> only unplugs, does not unrealize
/* we can do more unplug stuff */
}
object_unparent(dev) -> will unrealize
The original approach was suggested by Igor Mammedov for the PCI
part, but I extended it to all hotplug handlers. I consider this one
step into the right direction.
To summarize:
- object_unparent() on synchronous unplugs is done by common code
-- "Caller of hotplug_handler_unplug"
- object_unparent() on asynchronous unplugs ("unplug requests") has to
be done manually
-- "Caller of hotplug_handler_unplug"
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190228122849.4296-2-david@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-02-28 13:28:47 +01:00
|
|
|
object_property_set_bool(OBJECT(dev), false, "realized", NULL);
|
2014-09-26 11:28:21 +02:00
|
|
|
}
|
2011-04-06 15:51:59 +02:00
|
|
|
|
2015-06-19 16:17:22 +02:00
|
|
|
/*
|
|
|
|
* Realize @dev.
|
|
|
|
* Device properties should be set before calling this function. IRQs
|
|
|
|
* and MMIO regions should be connected/mapped after calling this
|
|
|
|
* function.
|
|
|
|
* On failure, report an error with error_report() and terminate the
|
|
|
|
* program. This is okay during machine creation. Don't use for
|
|
|
|
* hotplug, because there callers need to recover from failure.
|
|
|
|
* Exception: if you know the device's init() callback can't fail,
|
|
|
|
* then qdev_init_nofail() can't fail either, and is therefore usable
|
|
|
|
* even then. But relying on the device implementation that way is
|
|
|
|
* somewhat unclean, and best avoided.
|
|
|
|
*/
|
2009-10-07 01:15:58 +02:00
|
|
|
void qdev_init_nofail(DeviceState *dev)
|
|
|
|
{
|
2015-02-04 18:33:01 +01:00
|
|
|
Error *err = NULL;
|
2012-06-27 14:37:54 +02:00
|
|
|
|
2015-02-04 18:33:01 +01:00
|
|
|
assert(!dev->realized);
|
|
|
|
|
2016-08-02 05:41:41 +02:00
|
|
|
object_ref(OBJECT(dev));
|
2015-02-04 18:33:01 +01:00
|
|
|
object_property_set_bool(OBJECT(dev), true, "realized", &err);
|
|
|
|
if (err) {
|
2015-12-18 16:35:14 +01:00
|
|
|
error_reportf_err(err, "Initialization of device %s failed: ",
|
|
|
|
object_get_typename(OBJECT(dev)));
|
2010-05-27 21:23:08 +02:00
|
|
|
exit(1);
|
|
|
|
}
|
2016-08-02 05:41:41 +02:00
|
|
|
object_unref(OBJECT(dev));
|
2009-10-07 01:15:58 +02:00
|
|
|
}
|
|
|
|
|
2009-09-25 21:42:41 +02:00
|
|
|
void qdev_machine_creation_done(void)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* ok, initial machine setup is done, starting from now we can
|
|
|
|
* only create hotpluggable devices
|
|
|
|
*/
|
2017-03-28 11:08:52 +02:00
|
|
|
qdev_hotplug = true;
|
2009-09-25 21:42:41 +02:00
|
|
|
}
|
|
|
|
|
2011-01-04 20:37:50 +01:00
|
|
|
bool qdev_machine_modified(void)
|
|
|
|
{
|
|
|
|
return qdev_hot_added || qdev_hot_removed;
|
|
|
|
}
|
|
|
|
|
2009-05-23 01:05:19 +02:00
|
|
|
BusState *qdev_get_parent_bus(DeviceState *dev)
|
2009-05-14 23:35:06 +02:00
|
|
|
{
|
2009-05-23 01:05:19 +02:00
|
|
|
return dev->parent_bus;
|
2009-05-14 23:35:06 +02:00
|
|
|
}
|
|
|
|
|
2014-05-20 08:30:58 +02:00
|
|
|
static NamedGPIOList *qdev_get_named_gpio_list(DeviceState *dev,
|
|
|
|
const char *name)
|
|
|
|
{
|
|
|
|
NamedGPIOList *ngl;
|
|
|
|
|
|
|
|
QLIST_FOREACH(ngl, &dev->gpios, node) {
|
2019-11-20 14:42:01 +01:00
|
|
|
/* NULL is a valid and matchable name. */
|
|
|
|
if (g_strcmp0(name, ngl->name) == 0) {
|
2014-05-20 08:30:58 +02:00
|
|
|
return ngl;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
ngl = g_malloc0(sizeof(*ngl));
|
|
|
|
ngl->name = g_strdup(name);
|
|
|
|
QLIST_INSERT_HEAD(&dev->gpios, ngl, node);
|
|
|
|
return ngl;
|
|
|
|
}
|
|
|
|
|
2018-03-02 11:45:38 +01:00
|
|
|
void qdev_init_gpio_in_named_with_opaque(DeviceState *dev,
|
|
|
|
qemu_irq_handler handler,
|
|
|
|
void *opaque,
|
|
|
|
const char *name, int n)
|
2014-05-20 08:30:58 +02:00
|
|
|
{
|
2014-09-26 07:17:41 +02:00
|
|
|
int i;
|
2014-05-20 08:30:58 +02:00
|
|
|
NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name);
|
|
|
|
|
2014-09-26 07:17:08 +02:00
|
|
|
assert(gpio_list->num_out == 0 || !name);
|
2014-05-20 08:30:58 +02:00
|
|
|
gpio_list->in = qemu_extend_irqs(gpio_list->in, gpio_list->num_in, handler,
|
2018-03-02 11:45:38 +01:00
|
|
|
opaque, n);
|
2014-09-26 07:17:41 +02:00
|
|
|
|
2015-07-31 14:23:22 +02:00
|
|
|
if (!name) {
|
|
|
|
name = "unnamed-gpio-in";
|
|
|
|
}
|
2014-09-26 07:17:41 +02:00
|
|
|
for (i = gpio_list->num_in; i < gpio_list->num_in + n; i++) {
|
2015-07-31 14:23:22 +02:00
|
|
|
gchar *propname = g_strdup_printf("%s[%u]", name, i);
|
|
|
|
|
2014-09-26 07:17:41 +02:00
|
|
|
object_property_add_child(OBJECT(dev), propname,
|
|
|
|
OBJECT(gpio_list->in[i]), &error_abort);
|
2015-07-31 14:23:22 +02:00
|
|
|
g_free(propname);
|
2014-09-26 07:17:41 +02:00
|
|
|
}
|
|
|
|
|
2014-05-20 08:30:58 +02:00
|
|
|
gpio_list->num_in += n;
|
|
|
|
}
|
|
|
|
|
2009-05-14 23:35:06 +02:00
|
|
|
void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n)
|
|
|
|
{
|
2014-05-20 08:30:58 +02:00
|
|
|
qdev_init_gpio_in_named(dev, handler, NULL, n);
|
|
|
|
}
|
|
|
|
|
|
|
|
void qdev_init_gpio_out_named(DeviceState *dev, qemu_irq *pins,
|
|
|
|
const char *name, int n)
|
|
|
|
{
|
2014-09-26 07:18:14 +02:00
|
|
|
int i;
|
2014-05-20 08:30:58 +02:00
|
|
|
NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name);
|
|
|
|
|
2014-09-26 07:17:08 +02:00
|
|
|
assert(gpio_list->num_in == 0 || !name);
|
2014-09-26 07:18:14 +02:00
|
|
|
|
2015-07-31 14:23:22 +02:00
|
|
|
if (!name) {
|
|
|
|
name = "unnamed-gpio-out";
|
|
|
|
}
|
|
|
|
memset(pins, 0, sizeof(*pins) * n);
|
2014-09-26 07:18:14 +02:00
|
|
|
for (i = 0; i < n; ++i) {
|
2015-07-31 14:23:22 +02:00
|
|
|
gchar *propname = g_strdup_printf("%s[%u]", name,
|
|
|
|
gpio_list->num_out + i);
|
|
|
|
|
2014-09-26 07:18:14 +02:00
|
|
|
object_property_add_link(OBJECT(dev), propname, TYPE_IRQ,
|
|
|
|
(Object **)&pins[i],
|
|
|
|
object_property_allow_set_link,
|
2018-05-31 21:51:17 +02:00
|
|
|
OBJ_PROP_LINK_STRONG,
|
2014-09-26 07:18:14 +02:00
|
|
|
&error_abort);
|
2015-07-31 14:23:22 +02:00
|
|
|
g_free(propname);
|
2014-09-26 07:18:14 +02:00
|
|
|
}
|
2015-07-31 14:23:22 +02:00
|
|
|
gpio_list->num_out += n;
|
2009-05-14 23:35:06 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n)
|
|
|
|
{
|
2014-05-20 08:30:58 +02:00
|
|
|
qdev_init_gpio_out_named(dev, pins, NULL, n);
|
|
|
|
}
|
|
|
|
|
|
|
|
qemu_irq qdev_get_gpio_in_named(DeviceState *dev, const char *name, int n)
|
|
|
|
{
|
|
|
|
NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name);
|
|
|
|
|
|
|
|
assert(n >= 0 && n < gpio_list->num_in);
|
|
|
|
return gpio_list->in[n];
|
2009-05-14 23:35:06 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
qemu_irq qdev_get_gpio_in(DeviceState *dev, int n)
|
|
|
|
{
|
2014-05-20 08:30:58 +02:00
|
|
|
return qdev_get_gpio_in_named(dev, NULL, n);
|
|
|
|
}
|
|
|
|
|
|
|
|
void qdev_connect_gpio_out_named(DeviceState *dev, const char *name, int n,
|
|
|
|
qemu_irq pin)
|
|
|
|
{
|
2014-09-26 07:20:25 +02:00
|
|
|
char *propname = g_strdup_printf("%s[%d]",
|
|
|
|
name ? name : "unnamed-gpio-out", n);
|
|
|
|
if (pin) {
|
|
|
|
/* We need a name for object_property_set_link to work. If the
|
|
|
|
* object has a parent, object_property_add_child will come back
|
|
|
|
* with an error without doing anything. If it has none, it will
|
|
|
|
* never fail. So we can just call it with a NULL Error pointer.
|
|
|
|
*/
|
2015-03-12 16:09:34 +01:00
|
|
|
object_property_add_child(container_get(qdev_get_machine(),
|
|
|
|
"/unattached"),
|
|
|
|
"non-qdev-gpio[*]", OBJECT(pin), NULL);
|
2014-09-26 07:20:25 +02:00
|
|
|
}
|
|
|
|
object_property_set_link(OBJECT(dev), OBJECT(pin), propname, &error_abort);
|
|
|
|
g_free(propname);
|
2009-05-14 23:35:06 +02:00
|
|
|
}
|
|
|
|
|
2014-09-24 12:32:17 +02:00
|
|
|
qemu_irq qdev_get_gpio_out_connector(DeviceState *dev, const char *name, int n)
|
|
|
|
{
|
2020-03-07 04:07:56 +01:00
|
|
|
g_autofree char *propname = g_strdup_printf("%s[%d]",
|
2014-09-24 12:32:17 +02:00
|
|
|
name ? name : "unnamed-gpio-out", n);
|
|
|
|
|
|
|
|
qemu_irq ret = (qemu_irq)object_property_get_link(OBJECT(dev), propname,
|
|
|
|
NULL);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2015-09-08 23:45:14 +02:00
|
|
|
/* disconnect a GPIO output, returning the disconnected input (if any) */
|
2014-09-26 07:20:58 +02:00
|
|
|
|
|
|
|
static qemu_irq qdev_disconnect_gpio_out_named(DeviceState *dev,
|
|
|
|
const char *name, int n)
|
|
|
|
{
|
|
|
|
char *propname = g_strdup_printf("%s[%d]",
|
|
|
|
name ? name : "unnamed-gpio-out", n);
|
|
|
|
|
|
|
|
qemu_irq ret = (qemu_irq)object_property_get_link(OBJECT(dev), propname,
|
|
|
|
NULL);
|
|
|
|
if (ret) {
|
|
|
|
object_property_set_link(OBJECT(dev), NULL, propname, NULL);
|
|
|
|
}
|
|
|
|
g_free(propname);
|
|
|
|
return ret;
|
|
|
|
}
|
2014-05-20 08:30:58 +02:00
|
|
|
|
2014-09-26 07:20:58 +02:00
|
|
|
qemu_irq qdev_intercept_gpio_out(DeviceState *dev, qemu_irq icpt,
|
|
|
|
const char *name, int n)
|
|
|
|
{
|
|
|
|
qemu_irq disconnected = qdev_disconnect_gpio_out_named(dev, name, n);
|
|
|
|
qdev_connect_gpio_out_named(dev, name, n, icpt);
|
|
|
|
return disconnected;
|
2009-05-14 23:35:06 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin)
|
|
|
|
{
|
2014-05-20 08:30:58 +02:00
|
|
|
qdev_connect_gpio_out_named(dev, NULL, n, pin);
|
2009-05-14 23:35:06 +02:00
|
|
|
}
|
|
|
|
|
2014-09-26 07:23:42 +02:00
|
|
|
void qdev_pass_gpios(DeviceState *dev, DeviceState *container,
|
|
|
|
const char *name)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
NamedGPIOList *ngl = qdev_get_named_gpio_list(dev, name);
|
|
|
|
|
|
|
|
for (i = 0; i < ngl->num_in; i++) {
|
|
|
|
const char *nm = ngl->name ? ngl->name : "unnamed-gpio-in";
|
|
|
|
char *propname = g_strdup_printf("%s[%d]", nm, i);
|
|
|
|
|
|
|
|
object_property_add_alias(OBJECT(container), propname,
|
|
|
|
OBJECT(dev), propname,
|
|
|
|
&error_abort);
|
2015-04-09 21:57:30 +02:00
|
|
|
g_free(propname);
|
2014-09-26 07:23:42 +02:00
|
|
|
}
|
|
|
|
for (i = 0; i < ngl->num_out; i++) {
|
|
|
|
const char *nm = ngl->name ? ngl->name : "unnamed-gpio-out";
|
|
|
|
char *propname = g_strdup_printf("%s[%d]", nm, i);
|
|
|
|
|
|
|
|
object_property_add_alias(OBJECT(container), propname,
|
|
|
|
OBJECT(dev), propname,
|
|
|
|
&error_abort);
|
2015-04-09 21:57:30 +02:00
|
|
|
g_free(propname);
|
2014-09-26 07:23:42 +02:00
|
|
|
}
|
|
|
|
QLIST_REMOVE(ngl, node);
|
|
|
|
QLIST_INSERT_HEAD(&container->gpios, ngl, node);
|
|
|
|
}
|
|
|
|
|
2009-05-23 01:05:19 +02:00
|
|
|
BusState *qdev_get_child_bus(DeviceState *dev, const char *name)
|
2009-05-14 23:35:06 +02:00
|
|
|
{
|
2009-05-23 01:05:19 +02:00
|
|
|
BusState *bus;
|
2016-01-21 15:15:03 +01:00
|
|
|
Object *child = object_resolve_path_component(OBJECT(dev), name);
|
|
|
|
|
|
|
|
bus = (BusState *)object_dynamic_cast(child, TYPE_BUS);
|
|
|
|
if (bus) {
|
|
|
|
return bus;
|
|
|
|
}
|
2009-05-14 23:35:06 +02:00
|
|
|
|
2009-09-12 09:36:22 +02:00
|
|
|
QLIST_FOREACH(bus, &dev->child_bus, sibling) {
|
2009-05-14 23:35:06 +02:00
|
|
|
if (strcmp(name, bus->name) == 0) {
|
2009-05-23 01:05:19 +02:00
|
|
|
return bus;
|
2009-05-14 23:35:06 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2013-12-06 17:54:26 +01:00
|
|
|
int qdev_walk_children(DeviceState *dev,
|
|
|
|
qdev_walkerfn *pre_devfn, qbus_walkerfn *pre_busfn,
|
|
|
|
qdev_walkerfn *post_devfn, qbus_walkerfn *post_busfn,
|
|
|
|
void *opaque)
|
2010-11-19 10:55:58 +01:00
|
|
|
{
|
|
|
|
BusState *bus;
|
|
|
|
int err;
|
|
|
|
|
2013-12-06 17:54:26 +01:00
|
|
|
if (pre_devfn) {
|
|
|
|
err = pre_devfn(dev, opaque);
|
2010-11-19 10:55:58 +01:00
|
|
|
if (err) {
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
QLIST_FOREACH(bus, &dev->child_bus, sibling) {
|
2013-12-06 17:54:26 +01:00
|
|
|
err = qbus_walk_children(bus, pre_devfn, pre_busfn,
|
|
|
|
post_devfn, post_busfn, opaque);
|
2010-11-19 10:55:58 +01:00
|
|
|
if (err < 0) {
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-12-06 17:54:26 +01:00
|
|
|
if (post_devfn) {
|
|
|
|
err = post_devfn(dev, opaque);
|
|
|
|
if (err) {
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-11-19 10:55:58 +01:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-12-24 04:14:12 +01:00
|
|
|
DeviceState *qdev_find_recursive(BusState *bus, const char *id)
|
2009-09-25 21:42:41 +02:00
|
|
|
{
|
2011-12-23 22:34:39 +01:00
|
|
|
BusChild *kid;
|
|
|
|
DeviceState *ret;
|
2009-09-25 21:42:41 +02:00
|
|
|
BusState *child;
|
|
|
|
|
2011-12-23 22:34:39 +01:00
|
|
|
QTAILQ_FOREACH(kid, &bus->children, sibling) {
|
|
|
|
DeviceState *dev = kid->child;
|
|
|
|
|
|
|
|
if (dev->id && strcmp(dev->id, id) == 0) {
|
2009-09-25 21:42:41 +02:00
|
|
|
return dev;
|
2011-12-23 22:34:39 +01:00
|
|
|
}
|
|
|
|
|
2009-09-25 21:42:41 +02:00
|
|
|
QLIST_FOREACH(child, &dev->child_bus, sibling) {
|
|
|
|
ret = qdev_find_recursive(child, id);
|
|
|
|
if (ret) {
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2012-02-03 19:28:43 +01:00
|
|
|
char *qdev_get_dev_path(DeviceState *dev)
|
2011-12-12 21:29:25 +01:00
|
|
|
{
|
2012-05-02 09:00:20 +02:00
|
|
|
BusClass *bc;
|
2012-02-03 19:28:43 +01:00
|
|
|
|
|
|
|
if (!dev || !dev->parent_bus) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2012-05-02 09:00:20 +02:00
|
|
|
bc = BUS_GET_CLASS(dev->parent_bus);
|
|
|
|
if (bc->get_dev_path) {
|
|
|
|
return bc->get_dev_path(dev);
|
2012-02-03 19:28:43 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
2011-12-12 21:29:26 +01:00
|
|
|
}
|
2011-12-12 21:29:27 +01:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Legacy property handling
|
|
|
|
*/
|
|
|
|
|
qom: Swap 'name' next to visitor in ObjectPropertyAccessor
Similar to the previous patch, it's nice to have all functions
in the tree that involve a visitor and a name for conversion to
or from QAPI to consistently stick the 'name' parameter next
to the Visitor parameter.
Done by manually changing include/qom/object.h and qom/object.c,
then running this Coccinelle script and touching up the fallout
(Coccinelle insisted on adding some trailing whitespace).
@ rule1 @
identifier fn;
typedef Object, Visitor, Error;
identifier obj, v, opaque, name, errp;
@@
void fn
- (Object *obj, Visitor *v, void *opaque, const char *name,
+ (Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp) { ... }
@@
identifier rule1.fn;
expression obj, v, opaque, name, errp;
@@
fn(obj, v,
- opaque, name,
+ name, opaque,
errp)
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1454075341-13658-20-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-01-29 14:48:55 +01:00
|
|
|
static void qdev_get_legacy_property(Object *obj, Visitor *v,
|
|
|
|
const char *name, void *opaque,
|
|
|
|
Error **errp)
|
2011-12-12 21:29:27 +01:00
|
|
|
{
|
2012-01-30 15:55:55 +01:00
|
|
|
DeviceState *dev = DEVICE(obj);
|
2011-12-12 21:29:27 +01:00
|
|
|
Property *prop = opaque;
|
|
|
|
|
2011-12-18 17:05:06 +01:00
|
|
|
char buffer[1024];
|
|
|
|
char *ptr = buffer;
|
2011-12-12 21:29:27 +01:00
|
|
|
|
2011-12-18 17:05:06 +01:00
|
|
|
prop->info->print(dev, prop, buffer, sizeof(buffer));
|
qapi: Swap visit_* arguments for consistent 'name' placement
JSON uses "name":value, but many of our visitor interfaces were
called with visit_type_FOO(v, &value, name, errp). This can be
a bit confusing to have to mentally swap the parameter order to
match JSON order. It's particularly bad for visit_start_struct(),
where the 'name' parameter is smack in the middle of the
otherwise-related group of 'obj, kind, size' parameters! It's
time to do a global swap of the parameter ordering, so that the
'name' parameter is always immediately after the Visitor argument.
Additional reason in favor of the swap: the existing include/qjson.h
prefers listing 'name' first in json_prop_*(), and I have plans to
unify that file with the qapi visitors; listing 'name' first in
qapi will minimize churn to the (admittedly few) qjson.h clients.
Later patches will then fix docs, object.h, visitor-impl.h, and
those clients to match.
Done by first patching scripts/qapi*.py by hand to make generated
files do what I want, then by running the following Coccinelle
script to affect the rest of the code base:
$ spatch --sp-file script `git grep -l '\bvisit_' -- '**/*.[ch]'`
I then had to apply some touchups (Coccinelle insisted on TAB
indentation in visitor.h, and botched the signature of
visit_type_enum() by rewriting 'const char *const strings[]' to
the syntactically invalid 'const char*const[] strings'). The
movement of parameters is sufficient to provoke compiler errors
if any callers were missed.
// Part 1: Swap declaration order
@@
type TV, TErr, TObj, T1, T2;
identifier OBJ, ARG1, ARG2;
@@
void visit_start_struct
-(TV v, TObj OBJ, T1 ARG1, const char *name, T2 ARG2, TErr errp)
+(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp)
{ ... }
@@
type bool, TV, T1;
identifier ARG1;
@@
bool visit_optional
-(TV v, T1 ARG1, const char *name)
+(TV v, const char *name, T1 ARG1)
{ ... }
@@
type TV, TErr, TObj, T1;
identifier OBJ, ARG1;
@@
void visit_get_next_type
-(TV v, TObj OBJ, T1 ARG1, const char *name, TErr errp)
+(TV v, const char *name, TObj OBJ, T1 ARG1, TErr errp)
{ ... }
@@
type TV, TErr, TObj, T1, T2;
identifier OBJ, ARG1, ARG2;
@@
void visit_type_enum
-(TV v, TObj OBJ, T1 ARG1, T2 ARG2, const char *name, TErr errp)
+(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp)
{ ... }
@@
type TV, TErr, TObj;
identifier OBJ;
identifier VISIT_TYPE =~ "^visit_type_";
@@
void VISIT_TYPE
-(TV v, TObj OBJ, const char *name, TErr errp)
+(TV v, const char *name, TObj OBJ, TErr errp)
{ ... }
// Part 2: swap caller order
@@
expression V, NAME, OBJ, ARG1, ARG2, ERR;
identifier VISIT_TYPE =~ "^visit_type_";
@@
(
-visit_start_struct(V, OBJ, ARG1, NAME, ARG2, ERR)
+visit_start_struct(V, NAME, OBJ, ARG1, ARG2, ERR)
|
-visit_optional(V, ARG1, NAME)
+visit_optional(V, NAME, ARG1)
|
-visit_get_next_type(V, OBJ, ARG1, NAME, ERR)
+visit_get_next_type(V, NAME, OBJ, ARG1, ERR)
|
-visit_type_enum(V, OBJ, ARG1, ARG2, NAME, ERR)
+visit_type_enum(V, NAME, OBJ, ARG1, ARG2, ERR)
|
-VISIT_TYPE(V, OBJ, NAME, ERR)
+VISIT_TYPE(V, NAME, OBJ, ERR)
)
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1454075341-13658-19-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-01-29 14:48:54 +01:00
|
|
|
visit_type_str(v, name, &ptr, errp);
|
2011-12-12 21:29:27 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2020-01-10 16:30:34 +01:00
|
|
|
* qdev_class_add_legacy_property:
|
2016-04-17 09:45:54 +02:00
|
|
|
* @dev: Device to add the property to.
|
|
|
|
* @prop: The qdev property definition.
|
|
|
|
*
|
|
|
|
* Add a legacy QOM property to @dev for qdev property @prop.
|
2011-12-12 21:29:27 +01:00
|
|
|
*
|
2016-04-17 09:45:54 +02:00
|
|
|
* Legacy properties are string versions of QOM properties. The format of
|
|
|
|
* the string depends on the property type. Legacy properties are only
|
|
|
|
* needed for "info qtree".
|
2011-12-12 21:29:27 +01:00
|
|
|
*
|
2018-09-05 08:49:01 +02:00
|
|
|
* Do not use this in new code! QOM Properties added through this interface
|
2016-04-17 09:45:54 +02:00
|
|
|
* will be given names in the "legacy" namespace.
|
2011-12-12 21:29:27 +01:00
|
|
|
*/
|
2020-01-10 16:30:34 +01:00
|
|
|
static void qdev_class_add_legacy_property(DeviceClass *dc, Property *prop)
|
2011-12-12 21:29:27 +01:00
|
|
|
{
|
2020-01-10 16:30:34 +01:00
|
|
|
g_autofree char *name = NULL;
|
2011-12-12 21:29:27 +01:00
|
|
|
|
2012-05-02 13:31:07 +02:00
|
|
|
/* Register pointer properties as legacy properties */
|
2014-02-08 11:01:47 +01:00
|
|
|
if (!prop->info->print && prop->info->get) {
|
2012-02-02 10:17:19 +01:00
|
|
|
return;
|
|
|
|
}
|
2012-05-02 13:31:07 +02:00
|
|
|
|
2011-12-18 17:05:11 +01:00
|
|
|
name = g_strdup_printf("legacy-%s", prop->name);
|
2020-01-10 16:30:34 +01:00
|
|
|
object_class_property_add(OBJECT_CLASS(dc), name, "str",
|
|
|
|
prop->info->print ? qdev_get_legacy_property : prop->info->get,
|
|
|
|
NULL, NULL, prop, &error_abort);
|
2011-12-18 17:05:11 +01:00
|
|
|
}
|
|
|
|
|
2020-01-10 16:30:16 +01:00
|
|
|
void qdev_property_add_static(DeviceState *dev, Property *prop)
|
2011-12-18 17:05:11 +01:00
|
|
|
{
|
2012-04-02 22:40:26 +02:00
|
|
|
Object *obj = OBJECT(dev);
|
2020-01-10 16:30:34 +01:00
|
|
|
ObjectProperty *op;
|
2012-04-02 22:40:26 +02:00
|
|
|
|
2020-01-10 16:30:34 +01:00
|
|
|
assert(!prop->info->create);
|
|
|
|
|
|
|
|
op = object_property_add(obj, prop->name, prop->info->name,
|
|
|
|
prop->info->get, prop->info->set,
|
|
|
|
prop->info->release,
|
|
|
|
prop, &error_abort);
|
2014-10-07 08:33:22 +02:00
|
|
|
|
|
|
|
object_property_set_description(obj, prop->name,
|
|
|
|
prop->info->description,
|
|
|
|
&error_abort);
|
|
|
|
|
2017-07-17 14:36:06 +02:00
|
|
|
if (prop->set_default) {
|
2020-01-10 16:30:34 +01:00
|
|
|
prop->info->set_default_value(op, prop);
|
|
|
|
if (op->init) {
|
|
|
|
op->init(obj, op);
|
|
|
|
}
|
2012-04-02 22:40:26 +02:00
|
|
|
}
|
2011-12-12 21:29:42 +01:00
|
|
|
}
|
2011-12-19 23:37:46 +01:00
|
|
|
|
2020-01-10 16:30:34 +01:00
|
|
|
static void qdev_class_add_property(DeviceClass *klass, Property *prop)
|
|
|
|
{
|
|
|
|
ObjectClass *oc = OBJECT_CLASS(klass);
|
|
|
|
|
|
|
|
if (prop->info->create) {
|
|
|
|
prop->info->create(oc, prop, &error_abort);
|
|
|
|
} else {
|
|
|
|
ObjectProperty *op;
|
|
|
|
|
|
|
|
op = object_class_property_add(oc,
|
|
|
|
prop->name, prop->info->name,
|
|
|
|
prop->info->get, prop->info->set,
|
|
|
|
prop->info->release,
|
|
|
|
prop, &error_abort);
|
|
|
|
if (prop->set_default) {
|
|
|
|
prop->info->set_default_value(op, prop);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
object_class_property_set_description(oc, prop->name,
|
|
|
|
prop->info->description,
|
|
|
|
&error_abort);
|
|
|
|
}
|
|
|
|
|
2014-06-18 11:58:32 +02:00
|
|
|
/* @qdev_alias_all_properties - Add alias properties to the source object for
|
|
|
|
* all qdev properties on the target DeviceState.
|
|
|
|
*/
|
|
|
|
void qdev_alias_all_properties(DeviceState *target, Object *source)
|
|
|
|
{
|
|
|
|
ObjectClass *class;
|
|
|
|
Property *prop;
|
|
|
|
|
|
|
|
class = object_get_class(OBJECT(target));
|
|
|
|
do {
|
|
|
|
DeviceClass *dc = DEVICE_CLASS(class);
|
|
|
|
|
2020-01-23 12:11:38 +01:00
|
|
|
for (prop = dc->props_; prop && prop->name; prop++) {
|
2014-06-18 11:58:32 +02:00
|
|
|
object_property_add_alias(source, prop->name,
|
|
|
|
OBJECT(target), prop->name,
|
|
|
|
&error_abort);
|
|
|
|
}
|
|
|
|
class = object_class_get_parent(class);
|
|
|
|
} while (class != object_class_by_name(TYPE_DEVICE));
|
|
|
|
}
|
|
|
|
|
2014-04-25 12:44:21 +02:00
|
|
|
static bool device_get_realized(Object *obj, Error **errp)
|
2013-01-09 03:58:11 +01:00
|
|
|
{
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
return dev->realized;
|
|
|
|
}
|
|
|
|
|
2019-12-05 18:46:23 +01:00
|
|
|
static bool check_only_migratable(Object *obj, Error **errp)
|
2017-04-17 14:57:54 +02:00
|
|
|
{
|
|
|
|
DeviceClass *dc = DEVICE_GET_CLASS(obj);
|
|
|
|
|
|
|
|
if (!vmstate_check_only_migratable(dc->vmsd)) {
|
2019-12-05 18:46:23 +01:00
|
|
|
error_setg(errp, "Device %s is not migratable, but "
|
2017-04-17 14:57:54 +02:00
|
|
|
"--only-migratable was specified",
|
|
|
|
object_get_typename(obj));
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2014-04-25 12:44:21 +02:00
|
|
|
static void device_set_realized(Object *obj, bool value, Error **errp)
|
2013-01-09 03:58:11 +01:00
|
|
|
{
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
DeviceClass *dc = DEVICE_GET_CLASS(dev);
|
2014-09-26 11:28:41 +02:00
|
|
|
HotplugHandler *hotplug_ctrl;
|
2014-03-12 21:02:12 +01:00
|
|
|
BusState *bus;
|
2013-01-09 03:58:11 +01:00
|
|
|
Error *local_err = NULL;
|
2016-07-25 11:59:22 +02:00
|
|
|
bool unattached_parent = false;
|
|
|
|
static int unattached_count;
|
2013-01-09 03:58:11 +01:00
|
|
|
|
2014-02-05 16:36:46 +01:00
|
|
|
if (dev->hotplugged && !dc->hotpluggable) {
|
2015-03-17 11:54:50 +01:00
|
|
|
error_setg(errp, QERR_DEVICE_NO_HOTPLUG, object_get_typename(obj));
|
2014-02-05 16:36:46 +01:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2013-01-09 03:58:11 +01:00
|
|
|
if (value && !dev->realized) {
|
2017-04-17 14:57:54 +02:00
|
|
|
if (!check_only_migratable(obj, &local_err)) {
|
2017-02-13 19:04:48 +01:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
2014-09-02 14:03:05 +02:00
|
|
|
if (!obj->parent) {
|
2013-01-09 03:58:11 +01:00
|
|
|
gchar *name = g_strdup_printf("device[%d]", unattached_count++);
|
|
|
|
|
|
|
|
object_property_add_child(container_get(qdev_get_machine(),
|
|
|
|
"/unattached"),
|
2014-09-02 14:03:05 +02:00
|
|
|
name, obj, &error_abort);
|
2016-07-25 11:59:22 +02:00
|
|
|
unattached_parent = true;
|
2013-01-09 03:58:11 +01:00
|
|
|
g_free(name);
|
|
|
|
}
|
|
|
|
|
2016-05-12 05:48:15 +02:00
|
|
|
hotplug_ctrl = qdev_get_hotplug_handler(dev);
|
|
|
|
if (hotplug_ctrl) {
|
|
|
|
hotplug_handler_pre_plug(hotplug_ctrl, dev, &local_err);
|
|
|
|
if (local_err != NULL) {
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-04-11 16:51:56 +02:00
|
|
|
if (dc->realize) {
|
|
|
|
dc->realize(dev, &local_err);
|
2019-12-05 18:46:23 +01:00
|
|
|
if (local_err != NULL) {
|
|
|
|
goto fail;
|
|
|
|
}
|
2014-09-04 04:18:26 +02:00
|
|
|
}
|
|
|
|
|
2015-01-20 12:05:07 +01:00
|
|
|
DEVICE_LISTENER_CALL(realize, Forward, dev);
|
|
|
|
|
qdev: store DeviceState's canonical path to use when unparenting
device_unparent(dev, ...) is called when a device is unparented,
either directly, or as a result of a parent device being
finalized, and handles some final cleanup for the device. Part
of this includes emiting a DEVICE_DELETED QMP event to notify
management, which includes the device's path in the composition
tree as provided by object_get_canonical_path().
object_get_canonical_path() assumes the device is still connected
to the machine/root container, and will assert otherwise, but
in some situations this isn't the case:
If the parent is finalized as a result of object_unparent(), it
will still be attached to the composition tree at the time any
children are unparented as a result of that same call to
object_unparent(). However, in some cases, object_unparent()
will complete without finalizing the parent device, due to
lingering references that won't be released till some time later.
One such example is if the parent has MemoryRegion children (which
take a ref on their parent), who in turn have AddressSpace's (which
take a ref on their regions), since those AddressSpaces get cleaned
up asynchronously by the RCU thread.
In this case qdev:device_unparent() may be called for a child Device
that no longer has a path to the root/machine container, causing
object_get_canonical_path() to assert.
Fix this by storing the canonical path during realize() so the
information will still be available for device_unparent() in such
cases.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20171016222315.407-2-mdroth@linux.vnet.ibm.com>
[Clear dev->canonical_path at the post_realize_fail label, which is
cleaner. Suggested by David Gibson. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-17 00:23:13 +02:00
|
|
|
/*
|
|
|
|
* always free/re-initialize here since the value cannot be cleaned up
|
|
|
|
* in device_unrealize due to its usage later on in the unplug path
|
|
|
|
*/
|
|
|
|
g_free(dev->canonical_path);
|
|
|
|
dev->canonical_path = object_get_canonical_path(OBJECT(dev));
|
|
|
|
|
2014-09-04 04:18:26 +02:00
|
|
|
if (qdev_get_vmsd(dev)) {
|
2019-08-28 14:02:32 +02:00
|
|
|
if (vmstate_register_with_alias_id(VMSTATE_IF(dev),
|
2019-10-16 04:29:30 +02:00
|
|
|
VMSTATE_INSTANCE_ID_ANY,
|
|
|
|
qdev_get_vmsd(dev), dev,
|
2017-02-02 13:59:56 +01:00
|
|
|
dev->instance_id_alias,
|
|
|
|
dev->alias_required_for_version,
|
|
|
|
&local_err) < 0) {
|
|
|
|
goto post_realize_fail;
|
|
|
|
}
|
2013-01-09 03:58:11 +01:00
|
|
|
}
|
2014-09-04 04:18:26 +02:00
|
|
|
|
2020-01-30 17:02:04 +01:00
|
|
|
/*
|
|
|
|
* Clear the reset state, in case the object was previously unrealized
|
|
|
|
* with a dirty state.
|
|
|
|
*/
|
|
|
|
resettable_state_clear(&dev->reset);
|
|
|
|
|
2014-09-04 04:18:26 +02:00
|
|
|
QLIST_FOREACH(bus, &dev->child_bus, sibling) {
|
|
|
|
object_property_set_bool(OBJECT(bus), true, "realized",
|
2014-03-12 21:02:12 +01:00
|
|
|
&local_err);
|
2014-09-04 04:18:26 +02:00
|
|
|
if (local_err != NULL) {
|
|
|
|
goto child_realize_fail;
|
2014-03-12 21:02:12 +01:00
|
|
|
}
|
|
|
|
}
|
2014-09-04 04:18:26 +02:00
|
|
|
if (dev->hotplugged) {
|
2020-01-30 17:02:04 +01:00
|
|
|
/*
|
|
|
|
* Reset the device, as well as its subtree which, at this point,
|
|
|
|
* should be realized too.
|
|
|
|
*/
|
|
|
|
resettable_assert_reset(OBJECT(dev), RESET_TYPE_COLD);
|
|
|
|
resettable_change_parent(OBJECT(dev), OBJECT(dev->parent_bus),
|
|
|
|
NULL);
|
|
|
|
resettable_release_reset(OBJECT(dev), RESET_TYPE_COLD);
|
2013-01-09 03:58:11 +01:00
|
|
|
}
|
2014-06-26 15:10:03 +02:00
|
|
|
dev->pending_deleted_event = false;
|
2018-07-16 10:37:31 +02:00
|
|
|
|
|
|
|
if (hotplug_ctrl) {
|
2018-10-16 15:33:40 +02:00
|
|
|
hotplug_handler_plug(hotplug_ctrl, dev, &local_err);
|
|
|
|
if (local_err != NULL) {
|
|
|
|
goto child_realize_fail;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-01-09 03:58:11 +01:00
|
|
|
} else if (!value && dev->realized) {
|
2019-12-05 18:46:23 +01:00
|
|
|
/* We want local_err to track only the first error */
|
2014-03-12 21:02:12 +01:00
|
|
|
QLIST_FOREACH(bus, &dev->child_bus, sibling) {
|
|
|
|
object_property_set_bool(OBJECT(bus), false, "realized",
|
2019-12-05 18:46:23 +01:00
|
|
|
local_err ? NULL : &local_err);
|
2014-03-12 21:02:12 +01:00
|
|
|
}
|
2014-09-04 04:18:25 +02:00
|
|
|
if (qdev_get_vmsd(dev)) {
|
2019-08-28 14:02:32 +02:00
|
|
|
vmstate_unregister(VMSTATE_IF(dev), qdev_get_vmsd(dev), dev);
|
2013-04-15 18:34:10 +02:00
|
|
|
}
|
2014-09-04 04:18:25 +02:00
|
|
|
if (dc->unrealize) {
|
2019-12-05 18:46:23 +01:00
|
|
|
dc->unrealize(dev, local_err ? NULL : &local_err);
|
2013-01-09 03:58:11 +01:00
|
|
|
}
|
2014-06-26 15:10:03 +02:00
|
|
|
dev->pending_deleted_event = true;
|
2015-01-20 12:05:07 +01:00
|
|
|
DEVICE_LISTENER_CALL(unrealize, Reverse, dev);
|
2013-01-09 03:58:11 +01:00
|
|
|
|
2019-12-05 18:46:23 +01:00
|
|
|
if (local_err != NULL) {
|
|
|
|
goto fail;
|
|
|
|
}
|
2013-01-09 03:58:11 +01:00
|
|
|
}
|
|
|
|
|
2019-12-05 18:46:23 +01:00
|
|
|
assert(local_err == NULL);
|
2016-11-07 12:13:36 +01:00
|
|
|
dev->realized = value;
|
2014-09-04 04:18:26 +02:00
|
|
|
return;
|
|
|
|
|
|
|
|
child_realize_fail:
|
|
|
|
QLIST_FOREACH(bus, &dev->child_bus, sibling) {
|
|
|
|
object_property_set_bool(OBJECT(bus), false, "realized",
|
|
|
|
NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (qdev_get_vmsd(dev)) {
|
2019-08-28 14:02:32 +02:00
|
|
|
vmstate_unregister(VMSTATE_IF(dev), qdev_get_vmsd(dev), dev);
|
2014-09-04 04:18:26 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
post_realize_fail:
|
qdev: store DeviceState's canonical path to use when unparenting
device_unparent(dev, ...) is called when a device is unparented,
either directly, or as a result of a parent device being
finalized, and handles some final cleanup for the device. Part
of this includes emiting a DEVICE_DELETED QMP event to notify
management, which includes the device's path in the composition
tree as provided by object_get_canonical_path().
object_get_canonical_path() assumes the device is still connected
to the machine/root container, and will assert otherwise, but
in some situations this isn't the case:
If the parent is finalized as a result of object_unparent(), it
will still be attached to the composition tree at the time any
children are unparented as a result of that same call to
object_unparent(). However, in some cases, object_unparent()
will complete without finalizing the parent device, due to
lingering references that won't be released till some time later.
One such example is if the parent has MemoryRegion children (which
take a ref on their parent), who in turn have AddressSpace's (which
take a ref on their regions), since those AddressSpaces get cleaned
up asynchronously by the RCU thread.
In this case qdev:device_unparent() may be called for a child Device
that no longer has a path to the root/machine container, causing
object_get_canonical_path() to assert.
Fix this by storing the canonical path during realize() so the
information will still be available for device_unparent() in such
cases.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20171016222315.407-2-mdroth@linux.vnet.ibm.com>
[Clear dev->canonical_path at the post_realize_fail label, which is
cleaner. Suggested by David Gibson. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-17 00:23:13 +02:00
|
|
|
g_free(dev->canonical_path);
|
|
|
|
dev->canonical_path = NULL;
|
2014-09-04 04:18:26 +02:00
|
|
|
if (dc->unrealize) {
|
|
|
|
dc->unrealize(dev, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
fail:
|
|
|
|
error_propagate(errp, local_err);
|
2016-07-25 11:59:22 +02:00
|
|
|
if (unattached_parent) {
|
|
|
|
object_unparent(OBJECT(dev));
|
|
|
|
unattached_count--;
|
|
|
|
}
|
2013-01-09 03:58:11 +01:00
|
|
|
}
|
|
|
|
|
2014-04-25 12:44:21 +02:00
|
|
|
static bool device_get_hotpluggable(Object *obj, Error **errp)
|
2014-02-05 16:36:46 +01:00
|
|
|
{
|
|
|
|
DeviceClass *dc = DEVICE_GET_CLASS(obj);
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
|
2014-03-07 19:04:13 +01:00
|
|
|
return dc->hotpluggable && (dev->parent_bus == NULL ||
|
2014-09-26 11:28:17 +02:00
|
|
|
qbus_is_hotpluggable(dev->parent_bus));
|
2014-02-05 16:36:46 +01:00
|
|
|
}
|
|
|
|
|
2019-12-05 18:46:23 +01:00
|
|
|
static bool device_get_hotplugged(Object *obj, Error **errp)
|
2014-06-02 15:25:04 +02:00
|
|
|
{
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
|
|
|
|
return dev->hotplugged;
|
|
|
|
}
|
|
|
|
|
2011-12-22 22:06:37 +01:00
|
|
|
static void device_initfn(Object *obj)
|
|
|
|
{
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
|
|
|
|
if (qdev_hotplug) {
|
|
|
|
dev->hotplugged = 1;
|
|
|
|
qdev_hot_added = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev->instance_id_alias = -1;
|
2013-01-09 03:58:10 +01:00
|
|
|
dev->realized = false;
|
2019-10-29 12:49:01 +01:00
|
|
|
dev->allow_unplug_during_migration = false;
|
2011-12-22 22:06:37 +01:00
|
|
|
|
2014-05-20 08:30:58 +02:00
|
|
|
QLIST_INIT(&dev->gpios);
|
2011-12-22 22:06:37 +01:00
|
|
|
}
|
|
|
|
|
2018-12-01 22:23:27 +01:00
|
|
|
static void device_post_init(Object *obj)
|
|
|
|
{
|
qdev: Fix latent bug with compat_props and onboard devices
Compatibility properties started life as a qdev property thing: we
supported them only for qdev properties, and implemented them with the
machinery backing command line option -global.
Recent commit fa0cb34d221 put them to use (tacitly) with memory
backend objects (subtypes of TYPE_MEMORY_BACKEND). To make that
possible, we first moved the work of applying them from the -global
machinery into TYPE_DEVICE's .instance_post_init() method
device_post_init(), in commits ea9ce8934c5 and b66bbee39f6, then made
it available to TYPE_MEMORY_BACKEND's .instance_post_init() method
host_memory_backend_post_init() as object_apply_compat_props(), in
commit 1c3994f6d2a.
Note the code smell: we now have function name starting with object_
in hw/core/qdev.c. It has to be there rather than in qom/, because it
calls qdev_get_machine() to find the current accelerator's and
machine's compat_props.
Turns out calling qdev_get_machine() there is problematic. If we
qdev_create() from a machine's .instance_init() method, we call
device_post_init() and thus qdev_get_machine() before main() can
create "/machine" in QOM. qdev_get_machine() tries to get it with
container_get(), which "helpfully" creates it as "container" object,
and returns that. object_apply_compat_props() tries to paper over the
problem by doing nothing when the value of qdev_get_machine() isn't a
TYPE_MACHINE. But the damage is done already: when main() later
attempts to create the real "/machine", it fails with "attempt to add
duplicate property 'machine' to object (type 'container')", and
aborts.
Since no machine .instance_init() calls qdev_create() so far, the bug
is latent. But since I want to do that, I get to fix the bug first.
Observe that object_apply_compat_props() doesn't actually need the
MachineState, only its the compat_props member of its MachineClass and
AccelClass. This permits a simple fix: register MachineClass and
AccelClass compat_props with the object_apply_compat_props() machinery
right after these classes get selected.
This is actually similar to how things worked before commits
ea9ce8934c5 and b66bbee39f6, except we now register much earlier. The
old code registered them only after the machine's .instance_init()
ran, which would've broken compatibility properties for any devices
created there.
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190308131445.17502-2-armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2019-03-08 14:14:34 +01:00
|
|
|
/*
|
|
|
|
* Note: ordered so that the user's global properties take
|
|
|
|
* precedence.
|
|
|
|
*/
|
2018-12-01 22:23:27 +01:00
|
|
|
object_apply_compat_props(obj);
|
2015-01-20 10:04:07 +01:00
|
|
|
qdev_prop_set_globals(DEVICE(obj));
|
2013-07-10 22:08:42 +02:00
|
|
|
}
|
|
|
|
|
2011-12-23 15:38:56 +01:00
|
|
|
/* Unlink device from bus and free the structure. */
|
|
|
|
static void device_finalize(Object *obj)
|
|
|
|
{
|
2014-05-20 08:30:58 +02:00
|
|
|
NamedGPIOList *ngl, *next;
|
|
|
|
|
2011-12-23 15:38:56 +01:00
|
|
|
DeviceState *dev = DEVICE(obj);
|
2014-05-20 08:30:58 +02:00
|
|
|
|
|
|
|
QLIST_FOREACH_SAFE(ngl, &dev->gpios, node, next) {
|
|
|
|
QLIST_REMOVE(ngl, node);
|
2014-06-18 09:56:31 +02:00
|
|
|
qemu_free_irqs(ngl->in, ngl->num_in);
|
2014-05-20 08:30:58 +02:00
|
|
|
g_free(ngl->name);
|
|
|
|
g_free(ngl);
|
|
|
|
/* ngl->out irqs are owned by the other end and should not be freed
|
|
|
|
* here
|
|
|
|
*/
|
|
|
|
}
|
qdev: defer DEVICE_DEL event until instance_finalize()
DEVICE_DEL is currently emitted when a Device is unparented, as
opposed to when it is finalized. The main design motivation for this
seems to be that after unparent()/unrealize(), the Device is no
longer visible to the guest, and thus the operation is complete
from the perspective of management.
However, there are cases where remaining host-side cleanup is also
pertinent to management. The is generally handled by treating these
resources as aspects of the "backend", which can be managed via
separate interfaces/events, such as blockdev_add/del, netdev_add/del,
object_add/del, etc, but some devices do not have this level of
compartmentalization, namely vfio-pci, and possibly to lend themselves
well to it.
In the case of vfio-pci, the "backend" cleanup happens as part of
the finalization of the vfio-pci device itself, in particular the
cleanup of the VFIO group FD. Failing to wait for this cleanup can
result in tools like libvirt attempting to rebind the device to
the host while it's still being used by VFIO, which can result in
host crashes or other misbehavior depending on the host driver.
Deferring DEVICE_DEL still affords us the ability to manage backends
explicitly, while also addressing cases like vfio-pci's, so we
implement that approach here.
An alternative proposal involving having VFIO emit a separate event
to denote completion of host-side cleanup was discussed, but the
prevailing opinion seems to be that it is not worth the added
complexity, and leaves the issue open for other Device implementations
to solve in the future.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20171016222315.407-4-mdroth@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-17 00:23:15 +02:00
|
|
|
|
|
|
|
/* Only send event if the device had been completely realized */
|
|
|
|
if (dev->pending_deleted_event) {
|
|
|
|
g_assert(dev->canonical_path);
|
|
|
|
|
2018-08-15 15:37:37 +02:00
|
|
|
qapi_event_send_device_deleted(!!dev->id, dev->id, dev->canonical_path);
|
qdev: defer DEVICE_DEL event until instance_finalize()
DEVICE_DEL is currently emitted when a Device is unparented, as
opposed to when it is finalized. The main design motivation for this
seems to be that after unparent()/unrealize(), the Device is no
longer visible to the guest, and thus the operation is complete
from the perspective of management.
However, there are cases where remaining host-side cleanup is also
pertinent to management. The is generally handled by treating these
resources as aspects of the "backend", which can be managed via
separate interfaces/events, such as blockdev_add/del, netdev_add/del,
object_add/del, etc, but some devices do not have this level of
compartmentalization, namely vfio-pci, and possibly to lend themselves
well to it.
In the case of vfio-pci, the "backend" cleanup happens as part of
the finalization of the vfio-pci device itself, in particular the
cleanup of the VFIO group FD. Failing to wait for this cleanup can
result in tools like libvirt attempting to rebind the device to
the host while it's still being used by VFIO, which can result in
host crashes or other misbehavior depending on the host driver.
Deferring DEVICE_DEL still affords us the ability to manage backends
explicitly, while also addressing cases like vfio-pci's, so we
implement that approach here.
An alternative proposal involving having VFIO emit a separate event
to denote completion of host-side cleanup was discussed, but the
prevailing opinion seems to be that it is not worth the added
complexity, and leaves the issue open for other Device implementations
to solve in the future.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20171016222315.407-4-mdroth@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-17 00:23:15 +02:00
|
|
|
g_free(dev->canonical_path);
|
|
|
|
dev->canonical_path = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
qemu_opts_del(dev->opts);
|
2011-12-23 15:38:56 +01:00
|
|
|
}
|
|
|
|
|
2012-03-28 18:12:47 +02:00
|
|
|
static void device_class_base_init(ObjectClass *class, void *data)
|
|
|
|
{
|
|
|
|
DeviceClass *klass = DEVICE_CLASS(class);
|
|
|
|
|
|
|
|
/* We explicitly look up properties in the superclasses,
|
|
|
|
* so do not propagate them to the subclasses.
|
|
|
|
*/
|
2020-01-23 12:11:38 +01:00
|
|
|
klass->props_ = NULL;
|
2011-12-23 15:38:56 +01:00
|
|
|
}
|
|
|
|
|
2013-01-04 18:13:00 +01:00
|
|
|
static void device_unparent(Object *obj)
|
2012-11-23 09:47:13 +01:00
|
|
|
{
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
2013-01-25 14:12:34 +01:00
|
|
|
BusState *bus;
|
2012-11-23 09:47:13 +01:00
|
|
|
|
2014-03-12 21:02:12 +01:00
|
|
|
if (dev->realized) {
|
|
|
|
object_property_set_bool(obj, false, "realized", NULL);
|
|
|
|
}
|
2013-01-25 14:12:34 +01:00
|
|
|
while (dev->num_child_bus) {
|
|
|
|
bus = QLIST_FIRST(&dev->child_bus);
|
2013-12-18 17:15:51 +01:00
|
|
|
object_unparent(OBJECT(bus));
|
2013-01-25 14:12:34 +01:00
|
|
|
}
|
|
|
|
if (dev->parent_bus) {
|
2013-01-04 18:13:00 +01:00
|
|
|
bus_remove_child(dev->parent_bus, dev);
|
2013-01-25 14:12:35 +01:00
|
|
|
object_unref(OBJECT(dev->parent_bus));
|
|
|
|
dev->parent_bus = NULL;
|
2013-01-04 18:13:00 +01:00
|
|
|
}
|
2012-11-23 09:47:13 +01:00
|
|
|
}
|
|
|
|
|
2019-08-28 14:00:19 +02:00
|
|
|
static char *
|
|
|
|
device_vmstate_if_get_id(VMStateIf *obj)
|
|
|
|
{
|
|
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
|
|
|
|
return qdev_get_dev_path(dev);
|
|
|
|
}
|
|
|
|
|
2020-01-30 17:02:04 +01:00
|
|
|
/**
|
|
|
|
* device_phases_reset:
|
|
|
|
* Transition reset method for devices to allow moving
|
|
|
|
* smoothly from legacy reset method to multi-phases
|
|
|
|
*/
|
|
|
|
static void device_phases_reset(DeviceState *dev)
|
|
|
|
{
|
|
|
|
ResettableClass *rc = RESETTABLE_GET_CLASS(dev);
|
|
|
|
|
|
|
|
if (rc->phases.enter) {
|
|
|
|
rc->phases.enter(OBJECT(dev), RESET_TYPE_COLD);
|
|
|
|
}
|
|
|
|
if (rc->phases.hold) {
|
|
|
|
rc->phases.hold(OBJECT(dev));
|
|
|
|
}
|
|
|
|
if (rc->phases.exit) {
|
|
|
|
rc->phases.exit(OBJECT(dev));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void device_transitional_reset(Object *obj)
|
|
|
|
{
|
|
|
|
DeviceClass *dc = DEVICE_GET_CLASS(obj);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This will call either @device_phases_reset (for multi-phases transitioned
|
|
|
|
* devices) or a device's specific method for not-yet transitioned devices.
|
|
|
|
* In both case, it does not reset children.
|
|
|
|
*/
|
|
|
|
if (dc->reset) {
|
|
|
|
dc->reset(DEVICE(obj));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* device_get_transitional_reset:
|
|
|
|
* check if the device's class is ready for multi-phase
|
|
|
|
*/
|
|
|
|
static ResettableTrFunction device_get_transitional_reset(Object *obj)
|
|
|
|
{
|
|
|
|
DeviceClass *dc = DEVICE_GET_CLASS(obj);
|
|
|
|
if (dc->reset != device_phases_reset) {
|
|
|
|
/*
|
|
|
|
* dc->reset has been overridden by a subclass,
|
|
|
|
* the device is not ready for multi phase yet.
|
|
|
|
*/
|
|
|
|
return device_transitional_reset;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2012-11-23 09:47:13 +01:00
|
|
|
static void device_class_init(ObjectClass *class, void *data)
|
|
|
|
{
|
2013-01-09 03:58:11 +01:00
|
|
|
DeviceClass *dc = DEVICE_CLASS(class);
|
2019-08-28 14:00:19 +02:00
|
|
|
VMStateIfClass *vc = VMSTATE_IF_CLASS(class);
|
2020-01-30 17:02:04 +01:00
|
|
|
ResettableClass *rc = RESETTABLE_CLASS(class);
|
2013-01-09 03:58:11 +01:00
|
|
|
|
2013-01-04 18:13:00 +01:00
|
|
|
class->unparent = device_unparent;
|
2014-02-18 17:56:53 +01:00
|
|
|
|
|
|
|
/* by default all devices were considered as hotpluggable,
|
|
|
|
* so with intent to check it in generic qdev_unplug() /
|
|
|
|
* device_set_realized() functions make every device
|
|
|
|
* hotpluggable. Devices that shouldn't be hotpluggable,
|
|
|
|
* should override it in their class_init()
|
|
|
|
*/
|
|
|
|
dc->hotpluggable = true;
|
2017-05-03 22:35:44 +02:00
|
|
|
dc->user_creatable = true;
|
2019-08-28 14:00:19 +02:00
|
|
|
vc->get_id = device_vmstate_if_get_id;
|
2020-01-30 17:02:04 +01:00
|
|
|
rc->get_state = device_get_reset_state;
|
|
|
|
rc->child_foreach = device_reset_child_foreach;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* @device_phases_reset is put as the default reset method below, allowing
|
|
|
|
* to do the multi-phase transition from base classes to leaf classes. It
|
|
|
|
* allows a legacy-reset Device class to extend a multi-phases-reset
|
|
|
|
* Device class for the following reason:
|
|
|
|
* + If a base class B has been moved to multi-phase, then it does not
|
|
|
|
* override this default reset method and may have defined phase methods.
|
|
|
|
* + A child class C (extending class B) which uses
|
|
|
|
* device_class_set_parent_reset() (or similar means) to override the
|
|
|
|
* reset method will still work as expected. @device_phases_reset function
|
|
|
|
* will be registered as the parent reset method and effectively call
|
|
|
|
* parent reset phases.
|
|
|
|
*/
|
|
|
|
dc->reset = device_phases_reset;
|
|
|
|
rc->get_transitional_function = device_get_transitional_reset;
|
2020-01-10 16:30:33 +01:00
|
|
|
|
|
|
|
object_class_property_add_bool(class, "realized",
|
|
|
|
device_get_realized, device_set_realized,
|
|
|
|
&error_abort);
|
|
|
|
object_class_property_add_bool(class, "hotpluggable",
|
|
|
|
device_get_hotpluggable, NULL,
|
|
|
|
&error_abort);
|
|
|
|
object_class_property_add_bool(class, "hotplugged",
|
|
|
|
device_get_hotplugged, NULL,
|
|
|
|
&error_abort);
|
|
|
|
object_class_property_add_link(class, "parent_bus", TYPE_BUS,
|
|
|
|
offsetof(DeviceState, parent_bus), NULL, 0,
|
|
|
|
&error_abort);
|
2012-11-23 09:47:13 +01:00
|
|
|
}
|
|
|
|
|
2020-01-10 16:30:32 +01:00
|
|
|
void device_class_set_props(DeviceClass *dc, Property *props)
|
|
|
|
{
|
2020-01-10 16:30:34 +01:00
|
|
|
Property *prop;
|
|
|
|
|
2020-01-23 12:11:38 +01:00
|
|
|
dc->props_ = props;
|
2020-01-10 16:30:34 +01:00
|
|
|
for (prop = props; prop && prop->name; prop++) {
|
|
|
|
qdev_class_add_legacy_property(dc, prop);
|
|
|
|
qdev_class_add_property(dc, prop);
|
|
|
|
}
|
2020-01-10 16:30:32 +01:00
|
|
|
}
|
|
|
|
|
2018-01-14 03:04:11 +01:00
|
|
|
void device_class_set_parent_reset(DeviceClass *dc,
|
|
|
|
DeviceReset dev_reset,
|
|
|
|
DeviceReset *parent_reset)
|
|
|
|
{
|
|
|
|
*parent_reset = dc->reset;
|
|
|
|
dc->reset = dev_reset;
|
|
|
|
}
|
|
|
|
|
|
|
|
void device_class_set_parent_realize(DeviceClass *dc,
|
|
|
|
DeviceRealize dev_realize,
|
|
|
|
DeviceRealize *parent_realize)
|
|
|
|
{
|
|
|
|
*parent_realize = dc->realize;
|
|
|
|
dc->realize = dev_realize;
|
|
|
|
}
|
|
|
|
|
|
|
|
void device_class_set_parent_unrealize(DeviceClass *dc,
|
|
|
|
DeviceUnrealize dev_unrealize,
|
|
|
|
DeviceUnrealize *parent_unrealize)
|
|
|
|
{
|
|
|
|
*parent_unrealize = dc->unrealize;
|
|
|
|
dc->unrealize = dev_unrealize;
|
|
|
|
}
|
|
|
|
|
2020-01-30 17:02:03 +01:00
|
|
|
void device_legacy_reset(DeviceState *dev)
|
2011-12-04 18:36:01 +01:00
|
|
|
{
|
|
|
|
DeviceClass *klass = DEVICE_GET_CLASS(dev);
|
|
|
|
|
2020-01-30 17:02:03 +01:00
|
|
|
trace_qdev_reset(dev, object_get_typename(OBJECT(dev)));
|
2011-12-04 18:36:01 +01:00
|
|
|
if (klass->reset) {
|
|
|
|
klass->reset(dev);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-03-28 16:34:12 +02:00
|
|
|
Object *qdev_get_machine(void)
|
|
|
|
{
|
|
|
|
static Object *dev;
|
|
|
|
|
|
|
|
if (dev == NULL) {
|
2012-04-05 13:21:46 +02:00
|
|
|
dev = container_get(object_get_root(), "/machine");
|
2012-03-28 16:34:12 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
return dev;
|
|
|
|
}
|
|
|
|
|
2013-01-10 16:19:07 +01:00
|
|
|
static const TypeInfo device_type_info = {
|
2011-12-16 21:34:46 +01:00
|
|
|
.name = TYPE_DEVICE,
|
|
|
|
.parent = TYPE_OBJECT,
|
|
|
|
.instance_size = sizeof(DeviceState),
|
2011-12-22 22:06:37 +01:00
|
|
|
.instance_init = device_initfn,
|
2013-07-10 22:08:42 +02:00
|
|
|
.instance_post_init = device_post_init,
|
2011-12-23 15:38:56 +01:00
|
|
|
.instance_finalize = device_finalize,
|
2012-03-28 18:12:47 +02:00
|
|
|
.class_base_init = device_class_base_init,
|
2012-11-23 09:47:13 +01:00
|
|
|
.class_init = device_class_init,
|
2011-12-16 21:34:46 +01:00
|
|
|
.abstract = true,
|
|
|
|
.class_size = sizeof(DeviceClass),
|
2019-08-28 14:00:19 +02:00
|
|
|
.interfaces = (InterfaceInfo[]) {
|
|
|
|
{ TYPE_VMSTATE_IF },
|
2020-01-30 17:02:04 +01:00
|
|
|
{ TYPE_RESETTABLE_INTERFACE },
|
2019-08-28 14:00:19 +02:00
|
|
|
{ }
|
|
|
|
}
|
2011-12-16 21:34:46 +01:00
|
|
|
};
|
|
|
|
|
2012-02-09 15:20:55 +01:00
|
|
|
static void qdev_register_types(void)
|
2011-12-16 21:34:46 +01:00
|
|
|
{
|
|
|
|
type_register_static(&device_type_info);
|
|
|
|
}
|
|
|
|
|
2012-02-09 15:20:55 +01:00
|
|
|
type_init(qdev_register_types)
|